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Article: Build Your Own Organic Cotton Workout Set: Three Ready-to-Shop Formulas

Woman walking a coastal path in a matching navy PuraKai set: the High Neck Racerback Bra and High Waist Leggings.

Build Your Own Organic Cotton Workout Set: Three Ready-to-Shop Formulas

A model in PuraKai PureFlex Organic Cotton High Waist Leggings in Tidal Teal, three-quarter view
High Waist · Tidal Teal

Real customer review

“I have ordered 2 matching sets, and I absolutely LOVE them.”

Amanda W. Verified
High Waist Leggings★★★★★

Shop High Waist Leggings · $79

The easiest way to build an organic cotton workout set is to pick one of three proven formulas, each built from our best-selling pieces: a yoga set around our number-one seller, the High Waist Leggings, with the Racerback Sports Bra; an everyday set around the High Waist Pocket Leggings with a matching fitted top; or a gym set around our best-selling High Waist Shorts and the same top-selling bra. Every fitted piece uses the same PureFlex fabric, 92% GOTS-certified organic cotton with 8% spandex, so any top matches any bottom and the colors are dyed in the same Los Angeles dye house.

  • Your size in each piece
  • 92% GOTS-certified organic cotton
  • Dyed in the same Los Angeles dye house
  • Designed for coverage

Why Build a Set Instead of Buying One Boxed

Matching sets sold as a single unit lock you into one size for top and bottom. Most people aren't one size. Building your own set from coordinated pieces gets the match without the compromise: same fabric, same dye process, your size in each piece. The formulas below aren't guesses; they pair the pieces our customers actually buy the most, hundreds of orders a month, in combinations that wear together.

Formula 1: The Yoga and Pilates Set

PureFlex High Waist Leggings, $79 + PureFlex Racerback Sports Bra, $62. Set total: $141.

Our single best-selling piece paired with our best-selling bra. The high waist stays put through inversions and forward folds without rolling, and the racerback keeps straps clear of the shoulder blades. The cotton-dominant knit breathes through long holds, which is where synthetics turn clammy. In a warm studio, swap in the Capri Leggings, $74, for more airflow at the calf.

A model in the PuraKai PureFlex Organic Cotton Racerback Sports Bra in Black, front view
Racerback Sports Bra · Black
Shop High Waist Leggings · $79

Formula 2: The Everyday Set

PureFlex High Waist Pocket Leggings, $86 + PureFlex Reversible Pivot Top, $55. Set total: $141.

The deep side pockets hold a phone securely, which matters more on a walk or an errand run than anywhere else. The Reversible Pivot Top is the fitted match: same PureFlex fabric, two looks in one because it reverses, and it lets the leggings be seen instead of covering them. Prefer a different silhouette on the bottom? The Mid-Rise Leggings, $76, or Bootcut Leggings, $82, pair with the same top.

A model in the PuraKai PureFlex Organic Cotton Reversible Pivot Top in Navy
Reversible Pivot Top · Navy
Shop High Waist Pocket Leggings · $86

Formula 3: The Gym Set

PureFlex High Waist Shorts, $59 + PureFlex Racerback Sports Bra, $62. Set total: $121.

The shorts are one of our three best-selling products, and the bra is the one our customers choose most. Need a phone pocket between sets? The Pocket Shorts, $62, add one for $3 more. Want more coverage during rows, presses, and floor work? Swap in the High Neck Racerback Bra, $64; we describe it as low to medium impact. For cooler gyms, run either bra under the High Waist Leggings instead of shorts.

A model in PuraKai PureFlex Organic Cotton High Waist Shorts in Navy, 5-inch inseam
High Waist Shorts · 5" · Navy
Shop High Waist Shorts · $59

Two More Pairs That Work

The most-coverage set

High Waist Leggings + High Neck Racerback Bra. The bra is double-lined with a high neckline. Matches in Black, Navy and Bracken.

The warm-day set

High Waist Shorts + Reversible Pivot Top. Shorts in a 3" or 5" inseam. Matches in Black, Navy and Bracken.

“Love to wear it in combination with the reversible top!” Fabia B., High Waist Shorts

See every piece in one place in our organic cotton workout sets collection.

Shop organic cotton workout sets

Which Colors Match Across Tops and Bottoms?

A color shared by a top and a bottom makes a matching set. These are the colors each fitted piece comes in.

Black

Every fitted piece in this guide: High Waist Leggings, Pocket Leggings, High Waist Shorts, Pocket Shorts, Racerback Sports Bra, High Neck Racerback Bra and Reversible Pivot Top.

Navy

High Waist Leggings, Pocket Leggings, High Waist Shorts, Racerback Sports Bra, High Neck Racerback Bra and Reversible Pivot Top.

Bracken

A deep brown. High Waist Leggings, Pocket Leggings, High Waist Shorts, Pocket Shorts, High Neck Racerback Bra and Reversible Pivot Top.

Tidal Teal

High Waist Leggings, Pocket Leggings, High Waist Shorts, Pocket Shorts and Racerback Sports Bra.

Coastal Olive

High Waist Leggings, Pocket Leggings and Reversible Pivot Top.

Want a little contrast instead? Black works under any color, and Bracken and Coastal Olive pair well with each other.

“Absolutely love all of my sets I’ve ordered.” Amanda W., Reversible Pivot Top

The Rest-Day Set: Pure 100% Organic Cotton

Recovery days get their own formula. The Pure 100% Organic Cotton Classic Fit Tee, $44, with the Pure 100% Organic Cotton Lightweight Joggers, $79, is an all-cotton set with zero synthetic fiber, relaxed by design. PureFlex (92% organic cotton, 8% spandex) is the fitted training fabric; the Pure line is the relaxed one. The percentages differ because the jobs differ; a fitted legging needs stretch recovery, and a relaxed tee and jogger don't. Our guide to whether leggings can be 100% cotton explains the difference.

A model in the PuraKai Pure 100% Organic Cotton Classic Fit Tee in Black, front view
Classic Fit Tee · Black
Shop the Classic Fit Tee · $44

What customers say

Verified reviews of our tops, shown in full as published.

Jessica K.Verified

★★★★★

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

PureFlex High Neck Racerback Bra

Heather A.Verified

★★★★★

I am a yoga instructor and wear yoga clothes every day. I loved the sports bra I received. It fits well and is super soft and comfortable.

PureFlex Organic Cotton Racerback Sports Bra

Morgan F.Verified

★★★★★

The most comfortable bra I own. As someone with a larger chest I really appreciate the wide straps. I like being able to wear it two wears depending on the cut of my shirt too. Please offer in more colors!

PureFlex Organic Cotton Reversible Pivot Top

Claire N.Verified

★★★★★

Finally a supportive sports bra that's mostly cotton! Love it!!!

PureFlex Organic Cotton Racerback Sports Bra
Shop Racerback Sports Bra · $62

How to Size a Matching Set

Size each piece on its own. Your top size follows your bust. Your bottom size follows your waist and hips. Some people wear a different size on top and bottom.

Body measurements, in inches:

  • XS (0-2): bust 30-32, waist 24-26, hips 34-36
  • S (2-4): bust 32-34, waist 26-28, hips 36-38
  • M (6-8): bust 34-36, waist 28-30, hips 38-40
  • L (10-12): bust 36-38, waist 30-32, hips 40-42
  • XL (14-16): bust 39-40, waist 32-34, hips 42-44
  • XXL (18-20): bust 41-43, waist 35-37, hips 45-47

Our PureFlex pieces are garment-dyed and pre-shrunk, so choose the size you normally wear. If you're between sizes, size up for the best coverage. For a bra or top, size up if you prefer less compression. The full table is on our sizing chart.

“I’m 5’4”, 190 LBS I got larges for my bras and extra larges for my bottoms.” Quinn B., Reversible Pivot Top

Why These Sets Are Different

  • GOTS-certified organic cotton
  • PFAS-free · lab tested
  • Made in the USA, cut and sewn in our own Los Angeles factory
  • Family-owned since 2012

Every piece above is made with GOTS-certified organic cotton, designed, cut, sewn, and finished in our own Los Angeles facility, with knitting and garment dyeing done by Los Angeles partners. The fabric is independently lab-tested PFAS-free, and we publish the lab report. No polyester shell, no chemical performance coatings, and no imported mystery set from a factory nobody has visited. PuraKai is a father-and-daughter founded business, independent since 2012. Browse the full women's organic cotton activewear collection to build your own combination.

Shop organic cotton activewear

Caring for a Matching Set

Wash the set together: cold water, inside out, like colors, no fabric softener. Air dry both pieces. Washing top and bottom together keeps the color aging in step, so the set still matches a year in.

Frequently Asked Questions

What is the best organic cotton workout set for yoga?

The High Waist Leggings, $79, with the Racerback Sports Bra, $62. They are our best-selling bottom and best-selling bra, and the pairing works: the high waist stays put in inversions and the racerback keeps your shoulders free. Swap to capris for hot studios.

Do the tops and bottoms match in color?

Yes, when they share a color name. PureFlex pieces are garment-dyed by the same Los Angeles dye house, so shared colorways are dyed to match. Black, Navy and Bracken match across the leggings, the High Waist Shorts and both the High Neck Racerback Bra and Reversible Pivot Top. Coastal Olive matches the leggings and the Reversible Pivot Top. Wash the set together to keep the match as the pieces age.

Are PuraKai workout sets sold as one item?

No. You choose the top and the bottom separately, each in your own size, then pick the same color for both.

Are the sets see-through?

PureFlex is designed for coverage, with reduced sheerness in every colorway.

Can I mix a 100% cotton piece with 92/8 pieces?

Yes. The Pure 100% organic cotton tee and joggers make the rest-day set, and the PureFlex pieces make the training sets. Same organic cotton, different jobs: fitted pieces need spandex for stretch recovery, relaxed pieces don't.

Free 30-day returns & exchanges. Free shipping over $99.

Shop organic cotton workout sets

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