Gymbum UK Men's Black Baselayer

Gymbum UK Men's Black Baselayer

Engineered with purpose. Worn with confidence

Regular price £29.99 GBP
Regular price Sale price £29.99 GBP
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Shipped by GymBum UK

Size

Size chart

    GymBum UK Size Guide

    🧡 GymBum UK Sports Bra Size Guide

    Size Chest (inches) Underbust (inches)
    XS 33 ⅛ 27 ½
    S 34 ⅝ 29 ⅛
    M 36 ¼ 30 ¾
    L 39 ⅜ 33 ½
    XL 42 ½ 36 ¼
    2XL 45 ⅝ 39
    3XL 48 ⅞ 41 ¾

    🧍♀️ Women’s Activewear

    UK US EU Asian Tops / Bras Leggings / Shorts Trainers (UK/EU/US)
    4–6 0–2 32–34 S XS XS 3.5 / 36 / 5
    8–10 4–6 36–38 M S S 4–5.5 / 37–38 / 6–7.5
    12–14 8–10 40–42 L M M 6–7.5 / 39–40 / 8–9.5
    16 12 44 XL L L 8–8.5 / 41–42 / 10–11
    18 14 46 XXL XL XL 9–9.5 / 43–44 / 11.5–12

    🧍♂️ Men’s Activewear

    UK US EU Asian Tops / Hoodies Shorts / Joggers Trainers (UK/EU/US)
    S S 46 M 36–38" Chest 30" Waist 6–7 / 39–40 / 7–8
    M M 48–50 L 38–40" Chest 32–34" Waist 8–9 / 41–42 / 9–10
    L L 52 XL 42–44" Chest 36" Waist 10 / 43–44 / 11
    XL XL 54 XXL 46–48" Chest 38" Waist 11 / 45–46 / 12
    XXL XXL 56 3XL 50–52" Chest 40–42" Waist 12–13 / 47–48 / 13–14

    🧵 Fit Notes

    • Asian sizes typically run 1–2 sizes smaller than UK sizing.
    • For a performance fit, choose your regular UK size.
    • For a relaxed fit, size up.
    • Measurements are approximate and may vary slightly by fabric and style.

    Fit Tip: Some of our activewear follows Asian sizing (approx. 1–2 sizes smaller than UK). Refer to the GymBum Size Guide for accurate conversions.

    Gymbum UK Men's Black Leggings - Ultimate Comfort and Performance

    Experience unmatched comfort and performance with Gymbum UK Men's Leggings. Designed for active lifestyles, these leggings feature moisture-wicking fabric, a snug fit, and superior flexibility, making them perfect for the gym, beach, MMA training, workouts, running, yoga, and everyday wear. Elevate your fitness routine with leggings that offer style and functionality in one.

    Size guide

      WAIST (inches) HIPS (inches)
    XS 29 ⅞ 37
    S 31 ½ 38 ⅝
    M 33 ⅛ 40 ⅛
    L 36 ¼ 43 ¼
    XL 39 ⅜ 46 ½
    2XL 42 ½ 49 ⅝
    3XL 45 ⅝ 52 ¾
      WAIST (cm) HIPS (cm)
    XS 76 94
    S 80 98
    M 84 102
    L 92 110
    XL 100 118
    2XL 108 126
    3XL 116 134

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    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    FREE UK Shipping on Orders £50+

    Order Before 3PM — Same-Day Dispatch

    Official GymBum UK® — Registered Brand

    Meet Jess — Your Daily Motivation

    Real Training. Real Results.

    Jess represents everything GymBum stands for — hard work, positivity, and consistency. Whether she’s training outdoors or smashing a session in the gym, she puts our activewear through the real test: everyday movement. If she loves it, you will too.

    Meet Chloe — Strength with a Smile

    Your Inspiration for Everyday Training

    Chloe brings energy, positivity, and real dedication to every workout. Whether she’s lifting in the gym or running Scotland’s trails, she pushes our GymBum activewear to its limits. Her natural, confident style perfectly reflects what GymBum stands for — feel good, move strong, and become the best version of yourself.

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