After the festive season’s inevitable indulgence, the pendulum swings with the arrival of the new year. Fresh intentions are set, whether that’s finally committing to the gym, braving a new Pilates class or simply starting the day with a few gentle stretches. Fitness, in one form or another, becomes a new focus for some. For others, an immaculately curated activewear wardrobe is already just as essential as their daily outfit rotation. And given the general piqued interest in wellness, running, and health optimisation, now feels like the perfect moment to refresh your activewear collection.
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Adding to its appeal 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 their workout gear and trainers as you are dressed to the nines.
It goes without saying that the best activewear brands are those 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.
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.
On
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.
FP Movement
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, un-restricting silhouette – plus, the colour selection throughout the collection means there’s plenty to choose from.
Adidas
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.
Lululemon
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.
Nike
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 Move
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.
Sisterly Tribe
Offering an array of leggings, shorts and sports bras in muted shades, Sisterly Tribe’s collection is as easy on the eye as it is soft on the skin. The ballet wrap top is a customer favourite and has even been spotted on Hailey Bieber on a number of occasions.
Vuori
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 2025? The versatile Restore hoodie.
Sweaty Betty
A true high-street stalwart, Sweaty Betty has been dressing fitness lovers for over 25 years, and continues to convert with its sturdy Power leggings and Seamless running tops.
Alo Yoga
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. Tip: 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.
Adanola
Activewear specialist Adanola has been a social media hit in recent years, owing to its reliable selection of exercise- and lounge-wear. 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.
Lounge
Originally founded as an underwear-first brand, Lounge designs every piece with the female form top of mind. For 2025, we’re bookmarking the classic leggings and fitted top, which feel like sculpting second skins.
Tala
Tala may have only launched in May 2019, but it has already garnered a cult following, thanks to its functional and flattering fitness-wear 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.
Beyond Yoga
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 that combine comfort with style.
Girlfriend Collective
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.
Varley
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 or lounging time at home.
