PureFlex High Neck Racerback Bra

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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

Leggings and shorts lengths

Inseam is measured on the finished garment from the crotch seam to the hem. It's the same in every size, so you choose your size and your length separately.

Style	Short	Regular	Tall
High Waist, Pocket, Mid-Rise, Sculpt and No-Front-Seam leggings	23"	25"	28"
Bootcut leggings	27"	29.5"	32"
Capri leggings		17"
High Waist and Pocket shorts	3"	5"

Which length for your height

A guide to where the hem lands, barefoot. Full length sits at the ankle; 7/8 sits just above it.

Your height	Leggings (23" / 25" / 28")	Bootcut
Up to 5'1"	Short 23" for full length	Short 27"
5'2"–5'4"	Regular 25" for full length, or Short 23" as a 7/8	Regular 29.5"
5'5"	Tall 28" for full length, or Regular 25" as a 7/8	Regular 29.5"
5'6"–5'9"	Tall 28" for full length, or Regular 25" as a 7/8	Tall 32"
5'10" and up	Tall 28" sits just above the ankle	Tall 32"

Capri 17" is a mid-calf crop on most heights. Between two lengths? The longer one gathers slightly at the ankle; the shorter one sits as a 7/8.

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.

If you're between sizes, please size up for the best fit.

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.

How to measure

Bust: around the fullest part of your chest, with the tape flat but not tight.

Waist: around your natural waist, where you usually wear your pants. Relax and leave about 1/4 inch of slack.

Hips: around the widest part of your hips and seat, usually about 2 inches below your hip bones.

Inside leg: from your crotch straight down to where you want the hem, barefoot. Compare it with the inseams above.

Meet our most supportive PureFlex bra yet. The PureFlex High Neck Racerback Bra is double-lined in our soft 92% GOTS-certified organic cotton with 8% spandex for a secure, held-in feel without the slick synthetic texture of traditional activewear. The high neckline provides extra coverage during movement, while the racerback design keeps your shoulders free for yoga, walking, strength training, travel days, and everyday wear.

Designed for low to medium-impact support, this bra fits close to the body with a soft, breathable feel. Choose your usual size for a secure fit, or size up if you’re between sizes, prefer less compression, or want a more relaxed everyday feel. Now available through XXL for added coverage and sizing flexibility.

Use the measurements in our Sizing Chart to choose your size. If you are between sizes, we recommend the larger one.

Made from our signature PureFlex fabric, this bra blends 92% GOTS-certified organic cotton with 8% spandex for natural softness, breathable stretch, and gentle support. Unlike synthetic performance bras, PureFlex has a soft cotton feel that's comfortable against the skin while still offering enough structure to move with you.

Cut and sewn in our South El Monte, Los Angeles factory using cotton thread, then garment-dyed with AZO-free dyes by our local LA dyehouse partners. This is the same PureFlex fabric we had 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

PuraKai aims to create eco-friendly, sustainable clothing that is both stylish and comfortable, using only natural fabrics that begin and end in the soil, avoiding the shedding of microplastics. We also actively support environmental initiatives and ocean conservation.

PuraKai garments are designed, cut, sewn, and finished in our own Los Angeles facility, with knitting and garment dyeing handled by Los Angeles partners. Our Texas-Grown All American line follows its own documented route: organic cotton grown in Texas, spun in North Carolina, knitted in South Carolina, and sewn in Georgia.

We primarily use organic cotton, hemp, merino wool, and lyocell. We started with cotton grown in California and have since expanded to using GOTS organic cotton from India and other natural fibers.

Our All American Project uses Texas-Grown organic cotton made in North Carolina, South Carolina and Georgia, all within a 1,350 mile supply chain from seed to clothing.

To mitigate the environmental impact of microfiber shedding, PuraKai has committed to using only natural fibers that are biodegradable and integrate back into the soil at the end of their lifecycle, except for our activewear, which requires a small amount of spandex.

We have donated a portion of sales to environmental and ocean nonprofits every year since 2012, including organizations working on plastic pollution such as 5 Gyres.

We currently do not offer international shipping.

We recommend following the care instructions provided on the label of each garment to ensure the longevity and maintain the quality of your PuraKai clothing.

Our friendly and knowledgeable customer service team is here to assist you. You can contact us via email at hello@purakai.com for any queries or support.

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Customer Reviews

Overall rating: 4.6 / 5 from 9 reviews.

Love the fit it’s so flattering!

Athanasia A. 5/5 Verified August 28, 2026

PureFlex High Neck Racerback Bra

I absolutely love this bra! It’s super soft, hold it’s shape, and is very breathable. It’s a very supportive bra for running, which is hard to find with organic cotton.

Erin Z. 5/5 Verified August 1, 2026

I love this set so much! It’s comfortable. The color is so cute and I love that it’s made of Organic cotton and in the US. I highly recommend it!!

Gina H. 5/5 July 29, 2026

love this high neck scoop yoga top,

Ronald R. 5/5 Verified July 21, 2026

Loved this bra. Really love the high neckline and it fits comfortably. Love the color.

Gabby R. 5/5 Verified July 14, 2026

Comfortable and fits well

Natasha D. 5/5 Verified June 8, 2026

Comfortable, supportive, and cotton! Couldn't be better. I like the snug feeling (especially for working out) and the soft material. Will buy more!

Jessica K. 5/5 Verified June 8, 2026

This bra was way too small. It should be an XS. Could barely get it over my head and I’m thin.

Elizabeth F. 3/5 Verified September 28, 2026

I love the material. I didn't particularly like the cut of this top but I wish you guys could keep your popular styles stocked I would def be buying more.

Marissa W. 3/5 Verified September 22, 2026

PureFlex High Neck Racerback Bra

Measurements

Leggings and shorts lengths

Which length for your height

How to choose your size

How to measure