Plastic-free alternatives
Natural-fiber substitutes for Stio — Stio x Seea Women's Fonda Bikini Top Reversible in the Shirts category.

Stio
Stio x Seea Women's Fonda Bikini Top Reversible
12% Spandex, 92% Recycled Polyester
24 plastic-free alternatives
Sorted by Health Impact score. All have 0% synthetic content — no microplastic shedding, no plastic on skin.

Montura
MERINO CONCEPT MAGLIA
100% Merino Wool

Montura
MERINO CONCEPT T-SHIRT
100% Merino Wool

Icebreaker
Women's Merino 150 Tech Lite Short Sleeve Relaxed V Neck Tee
100% Merino Wool

Mons Royale
MP Heavyweight Merino T-Shirt - Willow | Men's T-Shirt
100% Merino Wool

Icebreaker
Women's Merino 150 Tech Lite Short Sleeve Relaxed Tee
100% Merino Wool

Icebreaker
Unisex Merino 150 Long Sleeve Pocket Tee
100% Merino Wool

Mons Royale
MP Heavyweight Merino T-Shirt - Black | Women's T-Shirt
100% Merino Wool

Smartwool
Women's Alpine Crew
100% Merino Wool

Icebreaker
Men's Merino 150 Tech Lite Short Sleeve Relaxed Tee
100% Merino Wool

Icebreaker
Women's Merino 150 Tech Lite Short Sleeve Relaxed V Neck Tee
100% Merino Wool

Icebreaker
Men's Merino 150 Tech Lite Short Sleeve Relaxed Tee Mountain Shift
100% Merino Wool

Icebreaker
Men's Merino 150 Tech Lite Short Sleeve Relaxed Tee Mountain Shift
100% Merino Wool

Icebreaker
Men's Merino 150 Tech Lite Long Sleeve Tee Peak Balance
100% Merino

Wild Rye
Hailey Half Zip
100% Merino Wool

Wild Rye
Evie Raglan
100% Merino Wool

Icebreaker
Women's Merino 150 Tech Lite Short Sleeve Tee Hike Path
100% Merino

Icebreaker
Men's Merino 150 Tech Lite Short Sleeve Relaxed Tee Fern Study
100% Merino Wool

Mons Royale
MP Heavyweight Merino T-Shirt - Black | Men's T-Shirt
100% Merino Wool

Smartwool
Men's Alpine Crew
100% Merino Wool

Icebreaker
Women's Merino 150 Tech Lite Short Sleeve Crop Tee Seed Story
100% Merino Wool

Black Crows
Men's Merino Wool Short Sleeve Tee
100% Merino Wool

Black Crows
Women's Merino Wool Short Sleeve Tee
100% Merino Wool

Icebreaker
Men's Merino 150 Tech Lite Short Sleeve Relaxed Tee
100% Merino Wool

Icebreaker
Unisex Merino 150 Short Sleeve Pocket Tee
100% Merino Wool