In 2026, running clubs are hailed as an alternative to dating apps, friends are as likely to meet for a reformer class as a post-work wine and there are now more padel courts than Starbucks in the UK. Given the general piqued interest in wellness, running, and health optimisation, there has been a boom in activewear brands that can deliver well beyond the gym, a run or a fitness class. Fit for purpose for both exercise and leisure time, stellar workout-wear should be versatile, comfortable, able to withstand movement, and, inevitably, sweat.

Adding to this is fashion’s ongoing obsession with activewear. Stretchy leggings feel surprisingly “now,” track jackets are the ultimate layering piece and cult trainers continue to sell out at record speed. Then there’s the steady stream of collaborations between fashion’s biggest names and sportswear giants – from Wales Bonner x Adidas and Loewe x On to Jacquemus x Nike and Cecilie Bahnsen x The North Face, to name just a few recent favourites. Today, you’re just as likely to spot Dua Lipa, Hailey Bieber and Kendall Jenner in lycra and trainers as you are dressed to the nines.

Picking the right brand depends on the exercise you plan on doing. Lululemon is renowned for its leggings, while sportswear giants like Adidas and Nike stock a vast range of pieces for varying activities, from trail running to football and yoga, that cater to every need. If you’re after supreme softness for light exercise and crucially, lounging in, Alo Yoga and Vuori are fashion insider favourites. Meanwhile, On is your best bet for high-performance wear.

Whether you’re working towards a new PB, committing to a routine, or simply need a new sports bra for motivation, scroll on for the best activewear brands to bookmark for 2026 and beyond.

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Launched by three-time World Duathlon champion Olivier Bernhard and engineers David Allemann and Caspar Coppetti, On’s activewear provides form and function at an incredibly high standard. The marriage of clean-cut designs and performance technology results in timeless pieces that will last a lifetime.

Like many of Free People’s designs, its activewear selection boasts a bohemian, free-spirited flair. The Carpe Diem shorts are especially beloved by runners due to their breezy, unrestrictive silhouette – plus, the colour selection throughout the collection means there’s plenty to choose from.

Don't Let Go Sports Bra

One of the OGs for high-performance sportswear, Adidas has in recent years expanded its oeuvre to include lust-worthy fashion collabs with the likes of Wales Bonner and Stella McCartney, alongside its successful Adidas Originals line, all of which look just as good on the city streets as they do in the gym.

X Simone Rocha Firebird Logo Embroidered Padded Shell Jacket

X Wales Bonner Karintha Leather Sneakers

Lululemon’s leggings, contoured outerwear and smart accessories have become legendary amongst fitness buffs. The brand’s Align leggings, which come in a plethora of colourways and lengths, are consistently voted best in class thanks to their comfortable construction and flattering fit.

In apparel, Nike’s figured out the sweet spot for high-performance fitness pieces that masquerade as real clothes. Aside from cosy sweats and puffers, the brand’s Dri-Fit tech, featured in compression pieces, is thinner (and somehow stronger) than traditional stretch yarns for a featherlight touch that lets you move freely.

H&M proves that form-fitting activewear needn’t be restrictive or uncomfortable. The collection features minimalist designs, many of which are made from a signature Softmove material that feels like butter on the body.

Drawing inspiration from the coastal California lifestyle, Vuori combines comfortable daywear silhouettes with high-performance fabrics to create exercise staples you’ll want to wear day in, day out. At the top of our list for 2026? The versatile Restore hoodie.

A true high-street stalwart, and worthy of a spot in our round up of the best activewear brands, Sweaty Betty has been dressing fitness lovers for over 25 years. The brand continues to convert with its sturdy Power leggings and Seamless running tops.

Associated with supermodels like Candice Swanepoel and the Hadid sisters, Alo Yoga’s designs are exactly the kind of athletic wear you’ll see in both celebrities-in-the-wild paparazzi shots and at yoga classes alike. If you’re in between sizes, check the product descriptions on the website, where you can often find a handy sizing demonstration video that will help you find the perfect fit.

Activewear specialist Adanola has been a social media hit in recent years, owing to its reliable selection of exercise and loungewear. Boasting a more affordable price point than other premium brands, its offering is focused on the modern, busy woman who wants to look and feel good at home, at the gym and everything in between.

Tala has garnered a cult following, thanks to its functional and flattering fitnesswear made from recycled and natural materials. With a range of separates and accessories on offer, available in sizes 2XS to 4X, you’re sure to find something to love.

DayFlex Wrap High-Waisted Flared Yoga Pant No Front Seam

Beyond Yoga has become a surprising cult hit for its jumpsuits and bodysuits, with top-rated designs beloved by its customers. Plus, the brand has figured out how to create slick maternity options, which few other brands have quite mastered.

Solemate 2.5 Short

Spacedye Slim Racerback Cropped Tank

Girlfriend Collective’s collections feature neutral colourways alongside vibrant shades and playful designs, with sizes ranging from XXS to 6XL. With each product, the brand also shares an eco breakdown that outlines how much waste is offset to create the garment. For example, the Connie bra diverts 12 bottles from landfill and can be easily recycled.

It’s been nearly a decade since Lara and Ben Mead launched Varley – a brand with a product range that hits the definition of “athleisure”. From elevated knitwear to outerwear and super-soft jersey leggings, its staples will see you through both a steady workout and lounging time at home.