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Our Best Sellers collection

Explore Premium Fitness & Activewear Best Sellers

Refresh your workout wardrobe with fitness and activewear from Allen Fitness. Explore this collection for your next gym session, running routine or everyday active look.

Keep your style focused on you. Choose pieces that suit the way you train, pair them with your favourite essentials and create an outfit that takes you from workout time to downtime.

Browse the collection and find your next fitness favourite. Check each product page for sizing, materials and care details before choosing your fit.

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  • ButterSoft™ 3″ Foldover Biker Short - Black - Premium Fitness & Activewear for Men & Women|UK

    ButterSoft™ 3″ Foldover Biker Short

    Sale price: £45.90 Regular price: £65.28 Save 30%
  • Majority Rule Elevate Active Set - Light Blue - Premium Fitness & Activewear for Men & Women|UK

    Majority Rule Elevate Active Set - Light Blue

    Sale price: £53.54 Regular price: £88.33 Save 39%
  • Sweat Out Super Soft Sports Bra For Women - Tan - Premium Fitness & Activewear for Men & Women|UK

    Sweat Out Super Soft Sports Bra For Women - Tan

    Sale price: £30.59 Regular price: £35.32 Save 13%
  • Front close-up of slate-blue triangle sports bra and matching high-waisted shorts on a model

    Sunrise Salutations Elevate Active Set - Slate Blue

    Sale price: £40.28 Regular price: £42.79 Save 6%
  • Tyson Resort Sweatpants For Men - Tan - Premium Fitness & Activewear for Men & Women|UK

    Tyson Resort Sweatpants For Men - Tan

    Sale price: £32.12 Regular price: £52.99 Save 39%
  • https://cdn.shopify.com/s/files/1/0293/9277/files/02-19-24_S2_12_ZDNVSP1081_White_P_CB_RA_15-11-11_9450_PXF.jpg?v=1738339446

    Tennis Play Elevate Active Top - White

    Sale price: £34.67 Regular price: £50.47 Save 31%
  • Tyson Jogger For Men In Plus Size - Navy - Premium Fitness & Activewear for Men & Women|UK

    Tyson Jogger For Men In Plus Size - Navy

    Sale price: £34.68 Regular price: £40.39 Save 14%
  • Person wearing a beige 'Queen' hoodie and jogger set on a white background

    Family Goals Women's Queen Jogger

    Sale price: £37.73 Regular price: £40.79 Save 8%
  • Front view of slate-blue high-waisted flared yoga trousers with side pockets on a model

    Tone Up Super Soft Active Yoga Pant - Slate Blue

    Sale price: £36.20 Regular price: £42.89 Save 16%
  • Side view of burgundy scoop-neck active mini dress with ruched wrap skirt on a walking model

    ButterSoft™ Cut Out Racerback 2-in-1 Active Dress

    Sale price: £73.44 Regular price: £82.42 Save 11%
  • Beach Body Effortless Seamless Active Yoga Pant - Bubblegum Pink - Premium Fitness & Activewear for Men & Women|UK

    Beach Body Effortless Seamless Active Yoga Pant - Bubblegum Pink

    Sale price: £26.00 Regular price: £42.89 Save 39%
  • https://cdn.shopify.com/s/files/1/0293/9277/files/03-21-25_S3_70_ZDNVSP1311_Black_RA_PC_15-10-34_25555_PXF.jpg?v=1742855943

    Sunrise Session Super Soft Active Jumpsuit - Black

    Sale price: £42.32 Regular price: £52.99 Save 20%
  • Reclining model wearing light-blue sports bra with cream trim and straps, holding a dumbbell

    AirSculpt™ Contrast Strap Sports Bra

    Sale price: £36.72 Regular price: £60.59 Save 39%
  • Model wearing black long-sleeve zip-front jumpsuit with white trainers, full-length front view

    In Alignment Super Soft Active Jumpsuit - Black

    Sale price: £46.91 Regular price: £60.57 Save 23%
  • Woman wearing a gray athletic outfit with white accents on a white background

    Running The Game Zip Front Short Set

    Sale price: £50.99 Regular price: £80.76 Save 37%
  • Front view of black baggy sweatpants with white oval Von Dutch logo and blue leg lettering on a model

    Von Dutch Live To Ride Baggy Sweatpants - Black

    Sale price: £56.60 Regular price: £63.09 Save 10%
  • Last Serve Active Top - Black - Premium Fitness & Activewear for Men & Women|UK

    Last Serve Active Top For Women - Black

    Sale price: £26.51 Regular price: £35.32 Save 25%
  • https://cdn.shopify.com/s/files/1/0293/9277/files/03-20-25_S2_34_ZDNVSP1692_Pink_RK_AC_14-13-12_14734_PXF.jpg?v=1742587542

    Sun Sweats Elevate Sports Bra - Pink

    Sale price: £21.41 Regular price: £35.32 Save 39%
  • Front close-up of black ribbed zip jacket with white sleeve stripes and thumbholes on a model

    Court Social Seamless Ribbed Active Jacket - Black

    Sale price: £39.77 Regular price: £65.62 Save 39%
  • 394074964-1

    Spring Knitted Vest Slim Top Women's Clothing

    Price: £20.24