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Killer Acid Results May Vary t-shirt in pink acid wash with a melting neon skull chest print

Results May Vary Pink Acid Wash T‑Shirt

$40.00
Killer Acid Mushrooms Are My Friends Vintage T-Shirt front product view

Mushrooms Are My Friends Vintage T‑Shirt

$40.00

  • NEW

Killer Acid A Walk in the Woods t-shirt in sage green with a left-chest print of a hiker, cat and smiling pine tree

A Walk in the Woods T‑Shirt

$40.00

  • NEW

Killer Acid Institute Deluxe t-shirt in blue and green tie-dye with a circular Institute for Psychedelic Research badge print

Killer Acid Institute Deluxe T‑Shirt

$50.00
Killer Acid Wild Shroom Rugby front product view

Wild Shroom Rugby

$95.00
Front flat lay showing mutated camo pattern

Mutated Camo Hoodie

$120.00

  • NEW

Killer Acid Melted Florals short-sleeve button up shirt in a teal and pink melted-floral print with chest pocket

Melted Florals Button Up

$75.00

  • NEW

Killer Acid Space Case Deluxe t-shirt in green and black tie-dye with a psychedelic scene of aliens, UFOs and volcanoes

Space Case Deluxe T‑Shirt

$50.00
Killer Acid Purple Heads Pullover Hoodie front product view

Purple Heads Pullover Hoodie

$85.00

  • NEW

Killer Acid Wavy Vision swim trunks in a black-and-white op-art wavy stripe print

Wavy Vision Swim Trunks

$60.00
Front flat lay showing haunted house design

Haunted House Glow in the Dark T‑Shirt

$40.00
Killer Acid x Phish Sphere t-shirt in natural cream with a left-chest print of a hand fanning PHISH heart playing cards

Phish Sphere T‑Shirt

$40.00

  • NEW

Killer Acid Institute Deluxe long sleeve in green and blue tie-dye with the Institute for Psychedelic Research badge and printed sleeves

Killer Acid Institute Deluxe Long Sleeve

$60.00
Front flat lay showing all-over mushroom pattern

Mushroom Friends Button Up

$70.00

  • NEW

Killer Acid Wild Shroom swim trunks with an all-over teal and coral print of wild melting creatures and critter faces

Wild Shroom Swim Trunks

$60.00

  • Save 25%

Killer Acid Nature is Weird Green T-Shirt front product view

Nature is Weird Green T‑Shirt

$30.00 $40.00
Killer Acid Cretaceous Cosmonauts T-Shirt front product view

Cretaceous Cosmonauts T‑Shirt

$40.00

  • NEW

Killer Acid Summer Slime swim trunks with a busy cartoon print of melting slime, smiley suns and skulls in teal, orange and yellow

Summer Slime Swim Trunks

$60.00
Killer Acid Blue Shroom terry-cloth shorts in teal checkerboard texture with an embroidered blue mushroom character

Blue Shroom Terry Shorts

$70.00
Front flat lay showing character artwork

Pay No Mind Vintage Wash T‑Shirt

$40.00

  • NEW

Killer Acid Acid Test swim trunks in a psychedelic pink and yellow liquid swirl print

Acid Test Swim Trunks

$60.00

  • Sold Out

Killer Acid Black Wavy Cat T-Shirt front product view

Black Wavy Cat T‑Shirt

$20.00 $40.00

  • Save 11%

Front flat lay showing blue stripes and patches

Work All Day Blue Jacket

$80.00 $90.00

  • NEW

Killer Acid Melted Florals shorts in a teal and pink melted-floral print with an embroidered character on the leg

Melted Florals Shorts

$60.00

  • NEW

Killer Acid Cretaceous Cosmonauts swim trunks, salmon-orange with teal line-art dinosaurs, aliens and UFOs

Cretaceous Cosmonauts Swim Trunks

$60.00
Killer Acid Cheshire Cat Pullover Hoodie front product view

Cheshire Cat Pullover Hoodie

$85.00

  • Save 25%

Killer Acid Microdose T-Shirt front product view

Microdose T‑Shirt

$30.00 $40.00
Killer Acid Party Animals Shorts front product view

Party Animals Shorts

$60.00

  • NEW

Third Eye Cat Jacquard T-Shirt - T-Shirts

Third Eye Cat Jacquard T‑Shirt

$50.00

  • NEW

Black Skull Pocket T-Shirt - T-Shirts

Black Skull Pocket T‑Shirt

$50.00

  • NEW

Wild Shroom Shorts - Shorts

Wild Shroom Shorts

$60.00

  • NEW

Mushroom Stripes Button Up - Button Ups

Mushroom Stripes Pants

$60.00

  • NEW

Mushroom Stripes Button Up - Button Ups

Mushroom Stripes Button Up

$75.00

  • NEW

Jungle Vibes Button Up - Button Ups

Jungle Vibes Button Up

$75.00

  • Save 38%

Killer Acid Dusk Til Dawn Vintage T-Shirt front product view

Dusk Til Dawn Vintage T‑Shirt

$25.00 $40.00

  • NEW

Blue Shroom Polo Shirt, small, with an embossed terry cloth checker pattern and embroidered mushroom.

Blue Shroom Terry Polo Shirt

$70.00
Front flat lay showing Cheshire cat design on purple

Cheshire Vintage T‑Shirt

$40.00

  • NEW

Killer Acid Space Case Deluxe long sleeve in green and black tie-dye with a psychedelic alien, UFO and volcano scene and printed sleeves

Space Case Deluxe Long Sleeve

$60.00

  • NEW

Hard Wired T-Shirt - T-Shirts

Hard Wired T‑Shirt

$40.00
Front flat lay showing crystal wash with heads pattern

Purple Heads Deluxe Crystal Wash T‑Shirt

$50.00
Killer Acid Party Animals Sweatshirt front product view

Party Animals Sweatshirt

$90.00

  • Save 30%

Front flat lay of teal terry hoodie

Killer Acid Terry Hoodie

$80.00 $115.00

  • Save 28%

Front product shot of beige terry crewneck

Killer Acid Terry Crewneck

$65.00 $90.00

  • Save 25%

Field Trip T-Shirt - T-Shirts

Field Trip T‑Shirt

$30.00 $40.00
Killer Acid Dog Daze Purple T-Shirt front product view

Dog Daze Purple T‑Shirt

$40.00

  • Save 25%

Socks Bundle / Buy 3 Get 1 Free - Socks

Socks Bundle / Buy 3 Get 1 Free

$45.00 $60.00
Killer Acid Mushrooms Are My Friends Deluxe Hoodie front product view

Mushrooms Are My Friends Deluxe Hoodie

$95.00
Killer Acid Mutated Camo shorts in a green and tan doodle-camo print of hidden monster faces with a round Killer Acid patch

Mutated Camo Shorts

$70.00

More Collections

Rainbow foil paper print showing full cat planet scene

CATS! CATS! CATS!

Killer Acid Mushrooms Are My Friends Vintage T-Shirt front product view

Mushroom Friends

Front product shot of beige terry crewneck

On Sale

The full Killer Acid clothing lineup in one place. T-shirts, hoodies, sweaters, jackets, hats, socks, shorts, and more, all featuring original psychedelic artwork. Screen printed on premium fabrics in styles ranging from vintage wash tees to bold jacquard knit sweaters. Sizes S through XXXL. Designed in Santa Cruz, California, shipped worldwide, worn by people who get it.