Unisex Lightweight 100% Cotton T-Shirts

Soft, breathable, and built for everyday wear. Shop unisex lightweight 100% cotton t-shirts that plant trees with every purchase.

Soft, breathable, and built for everyday wear. Shop unisex lightweight 100% cotton t-shirts that plant trees with every purchase.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a red mason bee with its wings spread, seen from above.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a red mason bee with its wings spread, seen from above.

Osmia Bicornis - Red Mason Bee - Lightweight 100% Cotton Unisex Crewneck

Osmia Bicornis

from $35.99

Osmia Bicornis from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of a male and female northern cardinal perched on a snowy branch with red berries.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of a male and female northern cardinal perched on a snowy branch with red berries.

Winter Cardinals - Lightweight 100% Cotton Unisex Crewneck

Winter Cardinals

from $35.99

Winter Cardinals from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a scatter of bright yellow fan-shaped ginkgo leaves falling.

Autumn lightweight cotton t-shirt laid flat, printed with a scatter of bright yellow fan-shaped ginkgo leaves falling.

Falling Ginkgo Leaves - Lightweight 100% Cotton Unisex Crewneck

Falling Ginkgo Leaves

from $35.99

Falling Ginkgo Leaves from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink desert scene with a saguaro cactus, agave, rocks and distant mountains.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink desert scene with a saguaro cactus, agave, rocks and distant mountains.

Desert Landscape - Lightweight 100% Cotton Unisex Crewneck

Desert Landscape

from $35.99

Desert Landscape from $35.99

Dusty blue lightweight cotton t-shirt laid flat with the sleeves rolled, printed with a full-color illustration of orange California poppies with blue-green leaves.

Dusty blue lightweight cotton t-shirt laid flat with the sleeves rolled, printed with a full-color illustration of orange California poppies with blue-green leaves.

Poppy Vibes - Lightweight 100% Cotton Unisex Crewneck

Poppy Vibes

from $35.99

Poppy Vibes from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a nine-banded armadillo standing upright.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a nine-banded armadillo standing upright.

Nine-Banded Armadillo - Dasypus novemcinctus - Lightweight 100% Cotton Unisex Crewneck

Nine-Banded Armadillo

from $35.99

Nine-Banded Armadillo from $35.99

Wild California Hare - Black-tailed Jackrabbit - Lightweight 100% Cotton Unisex Crewneck

Wild California Hare

from $35.99

Wild California Hare from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a striped skunk with its tail raised.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a striped skunk with its tail raised.

Striped Skunk - Mephitis mephitis - Lightweight 100% Cotton Unisex Crewneck

Striped Skunk

from $35.99

Striped Skunk from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink bee inside a wreath of leaves with the words Bee Mine.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink bee inside a wreath of leaves with the words Bee Mine.

Bee Mine - Lightweight 100% Cotton Unisex Crewneck

Bee Mine

from $35.99

Bee Mine from $35.99

Leaf green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a great white shark swimming toward the viewer with its mouth open.

Leaf green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a great white shark swimming toward the viewer with its mouth open.

Great White Shark - Lightweight 100% Cotton Unisex Crewneck

Great White Shark

from $35.99

Great White Shark from $35.99

Spring green lightweight cotton t-shirt laid flat with the sleeves rolled, printed with a soft full-color illustration of white chamomile flowers and green leaves.

Spring green lightweight cotton t-shirt laid flat with the sleeves rolled, printed with a soft full-color illustration of white chamomile flowers and green leaves.

Chamomile Vibes - Lightweight 100% Cotton Unisex Crewneck

Chamomile Vibes

Sold Out

Chamomile Vibes Sold Out

Autumn lightweight cotton t-shirt laid flat, printed with a detailed black ink portrait of an African grey parrot's head.

Autumn lightweight cotton t-shirt laid flat, printed with a detailed black ink portrait of an African grey parrot's head.

African Grey Parrot - Lightweight 100% Cotton Unisex Crewneck

African Grey Parrot

from $35.99

African Grey Parrot from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color chart of North American acorns, each labeled with its oak species.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color chart of North American acorns, each labeled with its oak species.

Native Acorns of North America - Lightweight 100% Cotton Unisex Crewneck

Native Acorns of North America

from $35.99

Native Acorns of North America from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of three wild horses galloping.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of three wild horses galloping.

Wild Horses Running - Lightweight 100% Cotton Unisex Crewneck

Wild Horses Running

from $35.99

Wild Horses Running from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a smiling beluga whale swimming upward.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a smiling beluga whale swimming upward.

Happy Beluga Whale - Delphinapterus leucas - Lightweight 100% Cotton Unisex Crewneck

Happy Beluga Whale

from $35.99

Happy Beluga Whale from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a death's-head hawkmoth with its wings spread.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a death's-head hawkmoth with its wings spread.

Death's-head Hawkmoth - Acherontia atropos - Lightweight 100% Cotton Unisex Crewneck

Death's-head Hawkmoth

from $35.99

Death's-head Hawkmoth from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a marvelous spatuletail hummingbird perched, with its two long racket-tipped tail feathers.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a marvelous spatuletail hummingbird perched, with its two long racket-tipped tail feathers.

Marvelous Spatuletail Hummingbird - Lightweight 100% Cotton Unisex Crewneck

Marvelous Spatuletail Hummingbird

from $35.99

Marvelous Spatuletail Hummingbird from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink hawksbill sea turtle framed by the words Too Rare to Wear, Save the Hawksbill.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink hawksbill sea turtle framed by the words Too Rare to Wear, Save the Hawksbill.

Too Rare to Wear - Save the Hawksbill - Lightweight 100% Cotton Unisex Crewneck

Too Rare to Wear

from $35.99

Too Rare to Wear from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a strand of bull kelp with long flowing blades.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a strand of bull kelp with long flowing blades.

Bull Kelp - Nereocystis Luetkeana - Lightweight 100% Cotton Unisex Crewneck

Bull Kelp

from $35.99

Bull Kelp from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with orange carved jack-o'-lanterns with black ink opossums, raccoons, owls and skunks peeking out.

Autumn lightweight cotton t-shirt laid flat, printed with orange carved jack-o'-lanterns with black ink opossums, raccoons, owls and skunks peeking out.

Woodland Pumpkin Patch Party - Lightweight 100% Cotton Unisex Crewneck

Woodland Pumpkin Patch Party

from $35.99

Woodland Pumpkin Patch Party from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of a nuthatch clinging to a branch.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of a nuthatch clinging to a branch.

White-breasted Nuthatch - Sitta carolinensis - Lightweight 100% Cotton Unisex Crewneck

White-breasted Nuthatch

from $35.99

White-breasted Nuthatch from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with black line art of palm trees, ocean waves, birds and a surfboard inside a diamond outline.

Blue bell lightweight cotton t-shirt laid flat, printed with black line art of palm trees, ocean waves, birds and a surfboard inside a diamond outline.

Summer Surf Diamond - Lightweight 100% Cotton Unisex Crewneck

Summer Surf Diamond

from $35.99

Summer Surf Diamond from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink roadrunner with the words Albuquerque New Mexico, 1706, Where the Desert Meets the Sky.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink roadrunner with the words Albuquerque New Mexico, 1706, Where the Desert Meets the Sky.

Albuquerque New Mexico Roadrunner - Lightweight 100% Cotton Unisex Crewneck

Albuquerque New Mexico Roadrunner

from $35.99

Albuquerque New Mexico Roadrunner from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a small cabin nestled beneath towering pine trees.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a small cabin nestled beneath towering pine trees.

Mountain Pine Cabin Retreat - Lightweight 100% Cotton Unisex Crewneck

Mountain Pine Cabin Retreat

from $35.99

Mountain Pine Cabin Retreat from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a narwhal with its long spiral tusk pointing upward.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a narwhal with its long spiral tusk pointing upward.

Narwhal - Monodon monoceros - Lightweight 100% Cotton Unisex Crewneck

Narwhal

from $35.99

Narwhal from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink flat lay of rock climbing gear, including a helmet, shoes, rope, harness and carabiners.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink flat lay of rock climbing gear, including a helmet, shoes, rope, harness and carabiners.

Summit Climbing Essentials - Lightweight 100% Cotton Unisex Crewneck

Summit Climbing Essentials

from $35.99

Summit Climbing Essentials from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink flat lay of golf gear, including a bag, clubs, balls, a cap, gloves and a cart.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink flat lay of golf gear, including a bag, clubs, balls, a cap, gloves and a cart.

Golf Essentials - Lightweight 100% Cotton Unisex Crewneck

Golf Essentials

from $35.99

Golf Essentials from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink sketch of a piping plover with its chicks on the sand.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink sketch of a piping plover with its chicks on the sand.

Piping Plovers - Charadrius melodus - Lightweight 100% Cotton Unisex Crewneck

Piping Plovers

from $35.99

Piping Plovers from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a fluffy silkie chicken.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a fluffy silkie chicken.

Silkie Chicken - Lightweight 100% Cotton Unisex Crewneck

Silkie Chicken

from $35.99

Silkie Chicken from $35.99

Sage green lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a chambered nautilus with its striped spiral shell and tentacles.

Sage green lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a chambered nautilus with its striped spiral shell and tentacles.

Palau Nautilus - Nautilus belauensis - Lightweight 100% Cotton Unisex Crewneck

Palau Nautilus

from $35.99

Palau Nautilus from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of garden cosmos flowers on stems.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of garden cosmos flowers on stems.

Garden Cosmos - Apollo White Cosmos bipinnatus - Lightweight 100% Cotton Unisex Crewneck

Garden Cosmos

from $35.99

Garden Cosmos from $35.99

Mauve pink lightweight cotton t-shirt laid flat with the sleeves rolled, printed with a black ink bear's face wearing sunglasses that read Mama.

Mauve pink lightweight cotton t-shirt laid flat with the sleeves rolled, printed with a black ink bear's face wearing sunglasses that read Mama.

Mama Bear - Mama Glasses - Lightweight 100% Cotton Unisex Crewneck

Mama Bear

from $35.99

Mama Bear from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink honey bee beneath the word Auntie.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink honey bee beneath the word Auntie.

Auntie Bee - Lightweight 100% Cotton Unisex Crewneck

Auntie Bee

from $35.99

Auntie Bee from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of three blue-footed boobies, one with its wings spread.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of three blue-footed boobies, one with its wings spread.

Blue-footed Booby Trio - Sula nebouxii - Lightweight 100% Cotton Unisex Crewneck

Blue-footed Booby Trio

from $35.99

Blue-footed Booby Trio from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink portrait of a fluffy alpaca's head and neck.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink portrait of a fluffy alpaca's head and neck.

Alpaca - Lightweight 100% Cotton Unisex Crewneck

Alpaca

from $35.99

Alpaca from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of a tall redwood tree dusted with snow and strung with holiday lights.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of a tall redwood tree dusted with snow and strung with holiday lights.

Christmas Redwood Tree - Lightweight 100% Cotton Unisex Crewneck

Christmas Redwood Tree

from $35.99

Christmas Redwood Tree from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of a northern cardinal perched with its crest raised.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of a northern cardinal perched with its crest raised.

Northern Cardinal - Cardinalis cardinalis - Lightweight 100% Cotton Unisex Crewneck

Northern Cardinal

from $35.99

Northern Cardinal from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a rainbow trout's head pointing upward, showing its spotted scales.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a rainbow trout's head pointing upward, showing its spotted scales.

Rainbow Trout - Oncorhynchus mykiss - Lightweight 100% Cotton Unisex Crewneck

Rainbow Trout

from $35.99

Rainbow Trout from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a red-tailed hawk perched.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a red-tailed hawk perched.

Red-tailed Hawk - Buteo jamaicensis - Lightweight 100% Cotton Unisex Crewneck

Red-tailed Hawk

from $35.99

Red-tailed Hawk from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a downy woodpecker clinging to a tree trunk.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a downy woodpecker clinging to a tree trunk.

Downy Woodpecker - Picoides pubescens - Lightweight 100% Cotton Unisex Crewneck

Downy Woodpecker

from $35.99

Downy Woodpecker from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of a white-crowned sparrow perched on a branch.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of a white-crowned sparrow perched on a branch.

White-crowned Sparrow - Zonotrichia leucophrys - Lightweight 100% Cotton Unisex Crewneck

White-crowned Sparrow

from $35.99

White-crowned Sparrow from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a giant stag beetle with large jaws, seen from above.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a giant stag beetle with large jaws, seen from above.

Dorcus titanus - Giant Stag Beetle - Lightweight 100% Cotton Unisex Crewneck

Dorcus titanus

from $35.99

Dorcus titanus from $35.99

Leaf green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a tiger shark swimming in a curve.

Leaf green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a tiger shark swimming in a curve.

Tiger Shark - Lightweight 100% Cotton Unisex Crewneck

Tiger Shark

from $35.99

Tiger Shark from $35.99

Mystery color Pop Pop Boxed unisex cotton crewneck tee printed with POP POP inside a square outline, surrounded by assorted shirt colors.

Mystery color Pop Pop Boxed unisex cotton crewneck tee printed with POP POP inside a square outline, surrounded by assorted shirt colors.

MYSTERY Pop Pop Boxed - Unisex Crewneck

MYSTERY Pop Pop Boxed Unisex Crewneck

from $18.00 $35.99

MYSTERY Pop Pop Boxed Unisex Crewneck from $18.00 $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of an American kestrel in flight with its wings raised.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of an American kestrel in flight with its wings raised.

Soaring American Kestrel - Falco sparverius - Lightweight 100% Cotton Unisex Crewneck

Soaring American Kestrel

from $35.99

Soaring American Kestrel from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of a cedar waxwing perched on a branch.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of a cedar waxwing perched on a branch.

Vibrant Cedar Waxwing - Bombycilla cedrorum - Lightweight 100% Cotton Unisex Crewneck

Vibrant Cedar Waxwing

from $35.99

Vibrant Cedar Waxwing from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a round badge of a waterfall, pine trees and a bison, with the words Yellowstone National Park, Est. 1872.

Blue bell lightweight cotton t-shirt laid flat, printed with a round badge of a waterfall, pine trees and a bison, with the words Yellowstone National Park, Est. 1872.

Yellowstone National Park - Lightweight 100% Cotton Unisex Crewneck

Yellowstone National Park

from $35.99

Yellowstone National Park from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black line art badge of Half Dome above a pine forest, with the words Half Dome, Yosemite National Park.

Blue bell lightweight cotton t-shirt laid flat, printed with a black line art badge of Half Dome above a pine forest, with the words Half Dome, Yosemite National Park.

Half Dome - Yosemite National Park - Lightweight 100% Cotton Unisex Crewneck

Half Dome

from $35.99

Half Dome from $35.99