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Ditch your toxic polyester gym shorts

Try Ryker’s 5.5” 100% Organic Cotton Gym Shorts. Polyester-Free Activewear.

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100% Natural Fabrics

No Endocrine Disruptors

Non-Toxic Fabric




100% Plastic-Free




Polyester-Free Gym Shorts

Rated 5/5 Based on 18 Reviews

The Ascend 5.5” 100% Organic Cotton Gym Shorts

Polyester & plastic-free

Made of 100% organic cotton

Fits just like Lululemon shorts

Naturally stretchy, temperature regulating and odor resistant









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Ships Within

24 Hours

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Try It & Love It Or

Your Money Back

Man doing pull-ups on a metal beam next to a hanging punching bag outdoors.

"Ryker's shorts are an absolutely elite alternative to polyester plastic shorts. They are super lightweight and silky smooth. Would highly recommend for anybody who is looking to ditch their polyester shorts but still wants that stretchy feel that you need in the gym."

Case Bradford, @casbrad


Man taking a selfie in a home gym with exercise equipment in the background.

"Ryker's shorts are extremely comfortable and I actually wear them more outside of the gym. I find them so comfortable and usually wear them around the house or when talking a walk. Such a great alternative to polyester shorts."

Zack S., @ZackStrength


Person squatting on a ramped platform, using gym rings for support, wearing a weighted vest.

"I was honestly shocked when I first tried on the gym shorts. Most natural shorts I've tried are just ok, but these actually feel like regular gym shorts but somehow are 100% organic cotton. Highly recommend for exercise or even just lounging around"

Travis D., @the_travisday



vs. "The Other Guys"

We're obssessed with bringing you high quality, plastic-free gym clothes. We don't cut corners and we never use polyester or other plastic-based synthetic fibers.

"The Other Guys"


Tons of Polyester

No Microplastics

Can Shed Microplastics

Made of Merino Wool and Organic Cotton

Made of Plastic-Based Fabrics

No Endocrine Disrupting Chemicals

May Contain Endocrine Disrupting Chemicals

Naturally Antimicrobial

Traps Heat, Sweat & Bacteria

Minimally Chemically Processed

Heavy Chemical Processing

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What’s wrong with polyester?

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made of

toxic plastic

Polyester is PLASTIC. You likely try to avoid plastic - so do you really want to wear it?

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Endocrine disrupting chemcials

Polyester can have endocrine disrupting chemicals - which can drop your T levels.

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Sheds Microplastics

When you wear polyester, microplastics can shed into your skin and the air around you.

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BPA and "Forever Chemicals"

These "forever chemicals" can leech into our water supply (and your skin).

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Formaldehyde & antimony

Formaldehyde? You mean the toxic chemical they use on corpses? Yup, we do.

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Potential Fertility Impacts

Endocrine disruptors are one reason men's sperm counts are down 50% since 1970.

Natural Fiber Activewear

Why Organic Cotton?

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No toxic pesticides or harmful chemicals

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Naturally soft & breathable

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100% natural, non-toxic fabric

Shop all polyester-free gym shorts

The Ascend 100% Cotton 5.5" Tech Short 2.0 - Navy (NEW)


The Ascend 100% Cotton 5.5" Tech Short 2.0 - Grey (NEW)


The Ascend 100% Cotton 5.5" Tech Short 2.0 - 2 Pack Bundle - Navy (Save 10%)


The Ascend 100% Cotton 5.5" Tech Short 2.0 - 2 Pack Bundle (Save 10%)


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Trusted by thousands of real people

From professional athletes to top fitness influencers, see why thousands are ditching polyester and switching to Ryker.

Person performing a barbell back squat in a gym squat rack.Person exercising on parallel bars in an outdoor gym under a clear blue sky.A man performs a planche on parallel bars against a cloudy sky.A person taking a mirror selfie at a gym, with various exercise equipment in the background.Feet in water at the beach, wearing dark shorts.Man in a gym taking a mirror selfie, wearing workout clothes and earbuds.

Finally, polyester-free gym shorts

I was honestly shocked once I learned most gym clothes were made of plastic. Went searching for plastic-free gym clothes & found Ryker - they fit great!

Jason M., Los Angeles

Fits and functions just like big brands

These shorts literally fit exactly like my Lulu shorts. Was skeptical of 100% organic cotton gym shorts at first but these are great!

Connor B., New York City

Super lightweight & stretchy

Surprised just how stretchy & lightweight these shorts are. Very different than other natural brands!

Ethan K., Austin Texas

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