Top 15 activewear brands to watch and wear in 2025

14) Gymshark

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In just over ten years, Gymshark went from being an internet high-street startup to a Regent Street mainstay, making its way into practically every gym wardrobe in the United Kingdom. However, the prices at this brand are still as competitive as the clothing you'll be wearing thanks to every celebrity endorsement. Along with almost everything else it has ever released, its staple "Crest" collections of t-shirts and tanks, as well as the £35 ($42.62) pair of joggers, are still among their most popular items.

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