The coordinated activewear set has moved from a gym fashion trend to a wardrobe staple in a remarkably short time. The appeal is straightforward: a matching legging and sports bra or crop top eliminates the decision fatigue of coordinating separates, photographs well in the studio and outside it, and — when bought from a brand that genuinely coordinates between pieces — provides a more aesthetically coherent result than mixing brands that use slightly different shades of the same colour.
The sets worth buying are those where the coordination is genuine — the same fabric lot, the same colour batch, the same fabric weight — and where the performance of both pieces is appropriate for the activity they’re designed for.
Available at: Lululemon (lululemon.com), in stores
Best for: Those who want the most premium matching studio activewear set in the market.
Lululemon coordinates their seasonal colours across all product categories, meaning a Define Jacket in a specific seasonal colour pairs perfectly with the Align in the same colour — same fabric lot, same dye batch, genuinely matching. The Define Jacket and Align Pant combination is the most consistently photographed studio activewear set across editorial and social content, and the quality of both pieces justifies the combined price.
Available at: Oner Active (oneractive.com)
Best for: Those who want a gym-specific coordinated set with strong aesthetic consideration.
Already covered in the gym wear section — Oner Active’s seamless sets are the gym-specific aesthetic standard. The coordinated crop and legging in their tonal colourways produce the specific gym aesthetic that photographs distinctively and performs through strength training and HIIT.
Gymshark’s seamless set range provides coordination across their more distinctive pattern ranges — the animal print, the camo, the colour-block designs that distinguish their sets from the neutral-focused brands. For those who want activewear that makes a bolder visual statement, Gymshark’s pattern range provides the most accessible option.
Available at: Sweaty Betty (sweatybetty.com), in stores
Best for: Those who want a coordinated running set with genuine high-impact performance in both pieces.
Sweaty Betty coordinates their running-specific pieces — the Zero Gravity legging and the matching sports bra — in seasonal colourways that genuinely match. For those who want a coordinated look for running without the compromise of running in yoga-specific sets, Sweaty Betty’s running-specific coordination is the correct category.
Available at: HERA London (heraclothing.com)
Best for: Those in the UK who want fashion-forward coordinated sets at accessible prices.
HERA London is the UK activewear brand occupying the space between Gymshark’s accessible pricing and Oner Active’s aesthetic consideration. The coordinated sets use seamless construction in tonal colourways with enough colour and textural variety across seasons to maintain interest. The performance is adequate for gym and studio use.
Start with one high-quality set in a neutral (black, slate, stone, soft white) that will coordinate with other pieces you own and serve multiple activity contexts. This becomes the base.
Add one set in a colour that you genuinely wear — not the colour you hope you’ll wear. A coral set purchased because it’s uplifting will not be worn by someone whose wardrobe is entirely grey, navy, and black.
Replace pieces individually when one component wears before the other — most brands sell the components of their sets as separates, meaning you can replace the legging that pills while keeping the bra, or vice versa.
The best activewear sets coordinate genuinely rather than approximately, perform appropriately for the specific activity, and are bought in colours the buyer will actually wear. Lululemon Define + Align for the premium studio set. Oner Active Seamless Set for gym aesthetic with performance. Gymshark Adapt Animal for patterned accessible coordination. Sweaty Betty Zero Gravity for the running-specific coordinated set. HERA London for accessible UK fashion-forward coordination. And Adidas x Stella McCartney for the ethical luxury collaboration. Whatever set you buy — check the specific colour match between pieces in person or request the same-colour-way confirmation if buying online. “Blue” from the same brand in two different seasons is not the same blue.