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PureFlex Organic Cotton High Waist Shorts

Sale price$55.00
  • 92% buttery-soft organic cotton and 8% spandex
  • Two inseams so you can choose your coverage
  • High waist that stays in place through movement
  • Garment dyed and pre-shrunk, so the fit holds wash after wash
Size:
Sizing Chart

Measurements

All measurements are body measurements, in inches.

Size Bust Waist Hips
XS (0-2) 30-32 24-26 34-36
Small (2-4) 32-34 26-28 36-38
Medium (6-8) 34-36 28-30 38-40
Large (10-12) 36-38 30-32 40-42
XL (14-16) 39-40 32-34 42-44
XXL (18-20) 41-43 35-37 45-47

How to choose your size

Most styles run true to size. PureFlex and Pure are garment dyed and pre-shrunk, so choose the size you normally wear.

Between sizes? Take the larger one. Sizing down puts more tension across the seat, which reduces opacity in a deep squat.

Need a different length? Change the inseam, not the size. Leggings come in three inseams and shorts in two, so a shorter inseam at your true size will fit better than a smaller size.

Shorts: check the measurements at your hip rather than the size you usually wear in shorts.

Bras and tops: your usual size for a secure fit, or size up if you prefer less compression.

Pure Lightweight Joggers: these fit closer than the name suggests. If you want a relaxed fit, size up.

Texas-Grown and EcoLuxe styles: use the measurements on the chart above.

Still deciding between two sizes? Email hello@purakai.com and we will help.

PuraKai size guide chart with bust, waist, hip and inseam measurements for sizes XS through XXL
Color:Black
Inseam:
Free 30-Day Returns & Exchanges

Wear Better. Save More. 15% off 2 • 20% off 3 • 25% off 4+
Discounts apply automatically at checkout.

Liz S.Verified
1/4
6/24/2026
These are the best organic fabric bike shorts I've found!! Soft, stretchy, good for working out, underwear lines are not prominent underneath.
Ainsley M.Verified
2/4
7/12/2026
I love them!!! The teal color is my favorite. I can be a XS or a S, but I went for a S to not be too tight and it's definitely perfect.
Jennifer S.Verified
3/4
6/3/2026
The shorts are the 5-inch and super soft and stretchy! Very flattering.
Laura K.Verified
4/4
6/21/2026
Perfect fabric and compression! Nice weave. 10/10. I'd love another pair.
PureFlex Organic Cotton High Waist Shorts - Black
PureFlex Organic Cotton High Waist Shorts Sale price$55.00
Independently tested for PFAS by Applied Technical Services, an independent testing laboratory: no PFAS detected, with total fluorine below 2 parts per million (October 2024).

Tested and Trusted

We had our bestselling leggings independently tested for PFAS by Applied Technical Services. Total fluorine, the limiting marker for the entire PFAS class, came back none detected at below 2 parts per million.

The report covers the main fabric of our organic cotton leggings, tested in October 2024, against a current industry threshold of 100 ppm. We publish the result rather than a blanket claim.

Why go the extra mile? PFAS are synthetic chemicals used to make fabrics stain and water-resistant, but they’re also known as “forever chemicals” because they persist in the environment and accumulate in our bodies. With PFAS linked to health risks, we made it our goal to guarantee skin-friendly comfort that eases your body and mind.

We use no DWR coatings and no fluorinated finishes anywhere in our line.

Frequently Asked Questions

Recently viewed

Customer Reviews

Overall rating: 4.5 / 5 from 99 reviews.

I love these SO much. These are the leggings and shorts I’ve been looking for! These waist band is awesome! That’s always the most particular part for me!

PureFlex Organic Cotton High Waist Shorts

I love the fit, they feel closest to my beyond yoga pants that I have found. I will say though I did size up for better squat/downdog proof. I fit the small. however medium there was a little less thinning in the deep bends around my booty. Looking forward to an expanded color line to replace all my other colorful yoga pants.

PureFlex Organic Cotton High Waist Shorts

Customer video review of PureFlex Organic Cotton High Waist Shorts

So happy with the quality and feel of these shorts! I've already worked out in them a couple of times, and I'm obsessed. I have been looking for sustainable alternatives in my activewear, and PuraKai ticked all the boxes. Plus, it's family-owned! Will definitely be purchasing again.

PureFlex Organic Cotton High Waist Shorts

Love love love these biker shorts! I’ve been looking for something to replace my Lululemon biker leggings and this is the best organic cotton option I’ve found! The most important aspect was the waistband. Other organic cotton leggings have an annoying band where it hits the stomach wrong. Purakai did an amazing job with the waistband (it’s like the Lulu align waistband). Highly recommend! Colors are super cute too. I have 3 pairs :)

PureFlex Organic Cotton High Waist Shorts

These are super nice! I’m pregnant so I wish I had sized up but that’s on me. As is they are a little see through if you squat but that doesnt bother me as much. I think if I had sized up then they wouldn’t be as see through. They feel like really good quality though

PureFlex Organic Cotton High Waist Shorts

Customer video review of PureFlex Organic Cotton High Waist Shorts

37 weeks pregnant and they are the most comfortable bottoms I have! Feels so quality, looks amazing, snatches in the right places . Can’t wait to see how they bounce back after I have the baby! Will keep you updated.

PureFlex Organic Cotton High Waist Shorts

I really, genuinely love these shorts. I think they are definitely worth the money. Very well-made, super comfortable, and so chic. Would absolutely recommend. I will be purchasing again.

PureFlex Organic Cotton High Waist Shorts

Customer photo review of EcoFlex 2.0 Organic Cotton High Waist Shorts

Love it!! Wear them allll the time. To yoga, on a run, to lounge, etc. So hard to come by quality fabrics in athletic clothes but this is exactly what I was looking for.

EcoFlex 2.0 Organic Cotton High Waist Shorts

I love these even more than I thought I would. Perfect fit. I am 25 waist in AGOLDE and 36 in Mother denim and a 2-4 in other clothing with a 34 hip. Perfect length too! Mahalo!

PureFlex Organic Cotton High Waist Shorts

Amazing fit, amazing quality! I’m thrilled to have found a company that prioritizes natural, non-toxic fabric! These shorts are so comfortable and flattering. Can’t wait to order more!

PureFlex Organic Cotton High Waist Shorts

These are amazing. I wear them for moderately fast walks on the walking pad at home and they're stretchy and have a lot of give around the waist, they stay in place and the fabric is so soft and comfortable. I've loved them!

PureFlex Organic Cotton High Waist Shorts

Customer video review of PureFlex Organic Cotton High Waist Shorts

I love them!!! The teal color is my favorite, please make more bright colors like this!! I can be a XS or a S, but I went for a S to not be too tight and it’s definitely perfect. XS would have been too tight. Can’t wait to buy more from this company :)

PureFlex Organic Cotton High Waist Shorts

Customer video review of PureFlex Organic Cotton High Waist Shorts

I really like these shorts. They are soft and not too compressive, just enough to retain their shape. They do ride up and are short to begin with, so next time I’ll probably order the longer inseam. But I still like them a lot. I like that they don't squeeze me, especially at the waist. I took a video to help others decide. I am wearing white underwear, which I normally would wear a thong, but you can't see through these. For reference, I am 5'2" and 115lbs and I ordered a size small.

PureFlex Organic Cotton High Waist Shorts

Customer video review of PureFlex Organic Cotton High Waist Shorts

These are the best organic fabric bike shorts I've found!! Soft, stretchy, good for working out, underwear lines are not prominent underneath. I'm wearing a large and I'm almost 5'4", 140ish pounds, waist 31" and hips/butt around 41".

PureFlex Organic Cotton High Waist Shorts

Customer video review of PureFlex Organic Cotton High Waist Shorts

Love this set - the shorts are the 5” and super soft and stretchy! Very flattering. I sized up nervous because it was cotton ( XL) but could fit in a L for sure. I’m 5’0 and 160lbs athletic / curvy.

PureFlex Organic Cotton High Waist Shorts

LOVE these shorts.. they are soft breathable and so comfortable.. Its been really hard finding shorts or leggings with a waistband like this, most I have found to have a seam at the very top which is uncomfortable.. Basically identical to Lululemon but 100x better.. Please restock the brown and create more colors need them ALL!!

PureFlex Organic Cotton High Waist Shorts