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.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink lion's head with the word Leo, for the Leo zodiac sign.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink lion's head with the word Leo, for the Leo zodiac sign.

Leo - Lion - Lightweight 100% Cotton Unisex Crewneck

Leo

from $35.99

Leo from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a stand-up paddleboard with a paddle.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a stand-up paddleboard with a paddle.

Stand-up Paddle Board - Lightweight 100% Cotton Unisex Crewneck

Stand-up Paddle Board

from $35.99

Stand-up Paddle Board from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a California least tern in flight.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a California least tern in flight.

California Least Tern - Sterna antillarum browni - Lightweight 100% Cotton Unisex Crewneck

California Least Tern

from $35.99

California Least Tern from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a California sea lion sitting upright.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a California sea lion sitting upright.

California Sea Lion - Zalophus californianus - Lightweight 100% Cotton Unisex Crewneck

California Sea Lion

from $35.99

California Sea Lion from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a black swallowtail butterfly with its wings spread.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a black swallowtail butterfly with its wings spread.

Black Swallowtail Butterfly - Papilio polyxenes - Lightweight 100% Cotton Unisex Crewneck

Black Swallowtail Butterfly

from $35.99

Black Swallowtail Butterfly 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 Sister Bear.

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

Sister Bear - Lightweight 100% Cotton Unisex Crewneck

Sister Bear

from $35.99

Sister Bear from $35.99

Spring green lightweight cotton t-shirt laid flat, printed with a full-color illustration of a single tall coast redwood tree.

Spring green lightweight cotton t-shirt laid flat, printed with a full-color illustration of a single tall coast redwood tree.

Lone Redwood - Lightweight 100% Cotton Unisex Crewneck

Lone Redwood

from $35.99

Lone Redwood from $35.99

Steel blue lightweight cotton t-shirt laid flat, printed with a black ink sketch of a black-tailed deer standing in tall grass.

Steel blue lightweight cotton t-shirt laid flat, printed with a black ink sketch of a black-tailed deer standing in tall grass.

Black-tailed Deer Doe - Odocoileus hemionus hemionus - Lightweight 100% Cotton Unisex Crewneck

Black-tailed Deer Doe

from $35.99

Black-tailed Deer Doe from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a grey wolf walking.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a grey wolf walking.

Roaming Grey Wolf - Canis lupus - Lightweight 100% Cotton Unisex Crewneck

Roaming Grey Wolf

from $35.99

Roaming Grey Wolf from $35.99

Unisex lightweight cotton crewneck t-shirt size chart, chest measured when laid flat. Size Small, Chest 18" wide, Length 28". Size Medium, Chest 20" wide, Length 29". Size Large, Chest 22" wide, Length 30". Size XL, Chest 24" wide, Length 32". Size 2XL, Chest 26" wide, Length 33". Size 3XL, Chest 28" wide, Length 34". Allow +/- 1" variance.

Unisex lightweight cotton crewneck t-shirt size chart, chest measured when laid flat. Size Small, Chest 18" wide, Length 28". Size Medium, Chest 20" wide, Length 29". Size Large, Chest 22" wide, Length 30". Size XL, Chest 24" wide, Length 32". Size 2XL, Chest 26" wide, Length 33". Size 3XL, Chest 28" wide, Length 34". Allow +/- 1" variance.

Pacific Golden Chanterelle - Cantharellus formosus - Lightweight 100% Cotton Unisex Crewneck

Pacific Golden Chanterelle

from $35.99

Pacific Golden Chanterelle from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a Spinosaurus with its tall sail-shaped back.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a Spinosaurus with its tall sail-shaped back.

Spinosaurus Aegyptiacus - Lightweight 100% Cotton Unisex Crewneck

Spinosaurus Aegyptiacus

from $35.99

Spinosaurus Aegyptiacus from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a circle made of small black ink pine trees.

Blue bell lightweight cotton t-shirt laid flat, printed with a circle made of small black ink pine trees.

CIrcle of Trees - Lightweight 100% Cotton Unisex Crewneck

CIrcle of Trees

from $35.99

CIrcle of Trees from $35.99

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

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

Dada Bee - Lightweight 100% Cotton Unisex Crewneck

Dada Bee

from $35.99

Dada Bee from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color chart of warblers of the Atlantic Flyway, each labeled with its species.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color chart of warblers of the Atlantic Flyway, each labeled with its species.

Warblers of the Atlantic Flyway - Lightweight 100% Cotton Unisex Crewneck

Warblers of the Atlantic Flyway

from $35.99

Warblers of the Atlantic Flyway from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of three Pacific tree frogs in different poses.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of three Pacific tree frogs in different poses.

Pacific Tree Frogs - Pseudacris regilla - Lightweight 100% Cotton Unisex Crewneck

Pacific Tree Frogs

from $35.99

Pacific Tree Frogs from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a collection of black ink wildlife illustrations surrounding the words Denali National Park.

Blue bell lightweight cotton t-shirt laid flat, printed with a collection of black ink wildlife illustrations surrounding the words Denali National Park.

Wildlife of Denali National Park - Lightweight 100% Cotton Unisex Crewneck

Wildlife of Denali National Park

from $35.99

Wildlife of Denali National Park from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a luna moth with long trailing tails on its wings.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a luna moth with long trailing tails on its wings.

Luna Moth - Actias luna - Lightweight 100% Cotton Unisex Crewneck

Luna Moth

from $35.99

Luna Moth from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a bigleaf maple leaf.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a bigleaf maple leaf.

Bigleaf Maple - Acer macrophyllum - Lightweight 100% Cotton Unisex Crewneck

Bigleaf Maple

from $35.99

Bigleaf Maple from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a megalodon shark with its jaws open.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a megalodon shark with its jaws open.

Megalodon - Otodus Megalodon - Lightweight 100% Cotton Unisex Crewneck

Megalodon

from $35.99

Megalodon from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a cheerful cartoon Earth running, with the words Earth First and There's Only Me, No Planet B.

Blue bell lightweight cotton t-shirt laid flat, printed with a cheerful cartoon Earth running, with the words Earth First and There's Only Me, No Planet B.

Earth First - There's Only Me, No Planet B - Lightweight 100% Cotton Unisex Crewneck

Earth First

from $35.99

Earth First from $35.99

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

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

Uncle Bee - Lightweight 100% Cotton Unisex Crewneck

Uncle Bee

from $35.99

Uncle Bee from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of backyard birds, including a cardinal and blue jay, perched on branches of autumn leaves.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of backyard birds, including a cardinal and blue jay, perched on branches of autumn leaves.

Autumn Backyard Birds - Lightweight 100% Cotton Unisex Crewneck

Autumn Backyard Birds

from $35.99

Autumn Backyard Birds from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of an orange monarch butterfly with its wings spread.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color illustration of an orange monarch butterfly with its wings spread.

Vibrant Monarch - Danaus plexippus - Lightweight 100% Cotton Unisex Crewneck

Vibrant Monarch

from $35.99

Vibrant Monarch from $35.99

Vintage denim lightweight cotton t-shirt laid flat, printed with the word UNCLE in thin black letters stacked inside a square outline.

Vintage denim lightweight cotton t-shirt laid flat, printed with the word UNCLE in thin black letters stacked inside a square outline.

Uncle Boxed - Lightweight 100% Cotton Unisex Crewneck

Uncle Boxed

from $35.99

Uncle Boxed from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a huntsman spider with long legs spread.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a huntsman spider with long legs spread.

Huntsman Spider - Olios giganteus - Lightweight 100% Cotton Unisex Crewneck

Huntsman Spider

from $35.99

Huntsman Spider from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a desert blonde tarantula.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a desert blonde tarantula.

Desert Blonde Tarantula - Aphonopelma chalcodes - Lightweight 100% Cotton Unisex Crewneck

Desert Blonde Tarantula

from $35.99

Desert Blonde Tarantula from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a hippo yawning with its mouth wide open, half submerged in water.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a hippo yawning with its mouth wide open, half submerged in water.

Hippo - Hippopotamus amphibius - Lightweight 100% Cotton Unisex Crewneck

Hippo

from $35.99

Hippo from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a silk moth with its wings spread.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a silk moth with its wings spread.

Domestic Silk Moth - Bombyx mori - Lightweight 100% Cotton Unisex Crewneck

Domestic Silk Moth

from $35.99

Domestic Silk Moth from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a Tyrannosaurus rex skeleton.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a Tyrannosaurus rex skeleton.

Tyrannosaurus Rex Skeleton - Lightweight 100% Cotton Unisex Crewneck

Tyrannosaurus Rex Skeleton

from $35.99

Tyrannosaurus Rex Skeleton from $35.99

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

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

Sister Bee - Lightweight 100% Cotton Unisex Crewneck

Sister Bee

from $35.99

Sister Bee from $35.99

Leaf green lightweight cotton t-shirt laid flat, printed with a black ink great white shark bursting out of a triangle outline with its mouth open.

Leaf green lightweight cotton t-shirt laid flat, printed with a black ink great white shark bursting out of a triangle outline with its mouth open.

Great White Shark Triangle - Lightweight 100% Cotton Unisex Crewneck

Great White Shark Triangle

from $35.99

Great White Shark Triangle from $35.99

Military green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a Greenland shark swimming.

Military green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a Greenland shark swimming.

Greenland Shark - Lightweight 100% Cotton Unisex Crewneck

Greenland Shark

from $35.99

Greenland Shark from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink raccoon eating a small orange pumpkin, with more pumpkins beside it.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink raccoon eating a small orange pumpkin, with more pumpkins beside it.

Raccoon Pumpkin Bandit - Lightweight 100% Cotton Unisex Crewneck

Raccoon Pumpkin Bandit

from $35.99

Raccoon Pumpkin Bandit from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with two pink American flamingos wading in water, one feeding with its head down and one standing tall.

Autumn lightweight cotton t-shirt laid flat, printed with two pink American flamingos wading in water, one feeding with its head down and one standing tall.

American Flamingos - Phoenicopterus ruber - Lightweight 100% Cotton Unisex Crewneck

American Flamingos

from $35.99

American Flamingos from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a mother black bear walking with two cubs.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a mother black bear walking with two cubs.

Mama Black Bear with Cubs - Lightweight 100% Cotton Unisex Crewneck

Mama Black Bear with Cubs

from $35.99

Mama Black Bear with Cubs from $35.99

Mystery color Pops Boxed unisex cotton crewneck tee with a minimalist boxed POPS design, surrounded by assorted shirt colors.

Mystery color Pops Boxed unisex cotton crewneck tee with a minimalist boxed POPS design, surrounded by assorted shirt colors.

MYSTERY Pops Boxed - Unisex Crewneck

MYSTERY Pops Boxed Unisex Crewneck

from $18.00 $35.99

MYSTERY Pops Boxed Unisex Crewneck from $18.00 $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of frost-covered evergreen trees.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of frost-covered evergreen trees.

Frosted Evergreens - Lightweight 100% Cotton Unisex Crewneck

Frosted Evergreens

from $35.99

Frosted Evergreens from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a koi fish swimming with flowing fins.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink line drawing of a koi fish swimming with flowing fins.

Koi Fish - Cyprinus rubrofuscus - Lightweight 100% Cotton Unisex Crewneck

Koi Fish

from $35.99

Koi Fish from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a black-footed ferret sitting on the ground.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink illustration of a black-footed ferret sitting on the ground.

Black-footed Ferret - Mustela nigripes - Lightweight 100% Cotton Unisex Crewneck

Black-footed Ferret

from $35.99

Black-footed Ferret from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a collection of black ink wildlife illustrations surrounding the words Acadia National Park.

Blue bell lightweight cotton t-shirt laid flat, printed with a collection of black ink wildlife illustrations surrounding the words Acadia National Park.

Wildlife of Acadia National Park - Lightweight 100% Cotton Unisex Crewneck

Wildlife of Acadia National Park

from $35.99

Wildlife of Acadia National Park from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink bison with the words Bozeman Montana, 1864, Where Great Plains Meet Great Peaks.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink bison with the words Bozeman Montana, 1864, Where Great Plains Meet Great Peaks.

Bozeman Montana Bison - Lightweight 100% Cotton Unisex Crewneck

Bozeman Montana Bison

from $35.99

Bozeman Montana Bison from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink moose with the words Anchorage Alaska, 1914, Where the Wild Calls.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink moose with the words Anchorage Alaska, 1914, Where the Wild Calls.

Anchorage Alaska Moose - Lightweight 100% Cotton Unisex Crewneck

Anchorage Alaska Moose

from $35.99

Anchorage Alaska Moose from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of an American robin perched on a branch.

Blue bell lightweight cotton t-shirt laid flat, printed with a detailed black ink sketch of an American robin perched on a branch.

American Robin - Turdus migratorius - Lightweight 100% Cotton Unisex Crewneck

American Robin

from $35.99

American Robin from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a California gull calling from a wooden post.

Blue bell lightweight cotton t-shirt laid flat, printed with a black ink illustration of a California gull calling from a wooden post.

California Gull - Larus californicus - Lightweight 100% Cotton Unisex Crewneck

California Gull

from $35.99

California Gull from $35.99

Blue bell lightweight cotton t-shirt laid flat, printed with a collection of black ink wildlife illustrations surrounding the words Yosemite National Park.

Blue bell lightweight cotton t-shirt laid flat, printed with a collection of black ink wildlife illustrations surrounding the words Yosemite National Park.

Wildlife of Yosemite National Park - Lightweight 100% Cotton Unisex Crewneck

Wildlife of Yosemite National Park

from $35.99

Wildlife of Yosemite National Park from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a long-necked plesiosaur swimming.

Autumn lightweight cotton t-shirt laid flat, printed with a black ink illustration of a long-necked plesiosaur swimming.

Plesiosaur - Plesiosaurus Dolichodeirus - Lightweight 100% Cotton Unisex Crewneck

Plesiosaur

from $35.99

Plesiosaur from $35.99

Spring green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a mako shark swimming.

Spring green lightweight cotton t-shirt laid flat, printed with a black ink illustration of a mako shark swimming.

Mako Shark - Lightweight 100% Cotton Unisex Crewneck

Mako Shark

from $35.99

Mako Shark from $35.99

Autumn lightweight cotton t-shirt laid flat, printed with a full-color chart of warblers of the Pacific Flyway, each labeled with its species.

Autumn lightweight cotton t-shirt laid flat, printed with a full-color chart of warblers of the Pacific Flyway, each labeled with its species.

Warblers of the Pacific Flyway - Lightweight 100% Cotton Unisex Crewneck

Warblers of the Pacific Flyway

from $35.99

Warblers of the Pacific Flyway from $35.99