Tencel Active T-shirt: Womens

Tencel Active T-shirt: Womens

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Size chart

    GymBum UK Size Guide

    GYMBUM UK®

    Size Guide


    1️⃣ Women – Sports Bras

    Measure Yourself

    For accurate sizing, keep the tape measure level and parallel to the ground.

    Bust
    Measure around the fullest part of your chest.

    Underbust
    Measure directly under your bust where the bra band sits.


    Body Measurements (Inches)

    Size Bust Underbust
    XS 33–34" 27–28"
    S 34–36" 28–30"
    M 36–38" 30–32"
    L 38–40" 32–34"
    XL 40–43" 34–36"
    2XL 43–46" 36–39"
    3XL 46–49" 39–42"

    Between sizes?
    Size up for a more comfortable fit.
    Size down for a more compressive performance fit.


    2️⃣ Women – Tops & T-Shirts

    Body Measurements (Inches)

    UK Size Bust Waist
    4–6 31–33" 24–26"
    8–10 33–36" 26–28"
    12–14 36–40" 28–32"
    16 40–43" 32–34"
    18 43–46" 34–37"

    3️⃣ Women – Leggings & Shorts

    Body Measurements (Inches)

    UK Size Waist Hips
    4–6 24–26" 34–36"
    8–10 26–28" 36–38"
    12–14 28–32" 38–42"
    16 32–34" 42–44"
    18 34–37" 44–46"

    4️⃣ Men – Tops & Hoodies

    Size Chest Waist
    S 36–38" 30"
    M 38–40" 32–34"
    L 42–44" 36"
    XL 46–48" 38"
    XXL 50–52" 40–42"

    5️⃣ Men – Shorts & Joggers

    Size Waist
    S 30"
    M 32–34"
    L 36"
    XL 38"
    XXL 40–42"

    Fit & Sizing Notes

    • Some styles follow Asian sizing and may run 1–2 sizes smaller than standard UK sizing.
    • Refer to each product description for specific fit details.
    • Measurements may vary slightly depending on fabric and cut.

    Breathe with confidence — performance meets sustainability

    Key features & styling

    • Relaxed, loose fit with classic short sleeves and a round neckline — designed for comfort that moves with you. 

    • Made from a blend of 58 % organic cotton, 39 % modal (TENCEL™), and 3 % elastane — offering softness, stretch, and moisture regulation. 

    • The elastic cotton-modal mix keeps shape and supports active wear without feeling restrictive. 

    • Ideal for layering over a sports bra, or wearing solo for light workouts or everyday wear.

    • The soft drape and comfortable cut allow it to double as both activewear and casual top.

    • True to size — if you prefer a bit more ease or a more relaxed flow, you may want to size up.

    Why it belongs in your collection
    This tee doesn’t force a tradeoff between function and ethics. The performance blend supports movement and comfort; the organic and TENCEL™ components support responsible sourcing. 

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    FREE UK Shipping on Orders £50+

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    FREE UK Shipping on Orders £50+

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    Official GymBum UK® — Registered Brand