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Essential Amino Acids

Essential Amino Acids

Engineered with purpose. Worn with confidence

£42.95 GBP
£42.95 GBP £42.95 GBP
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    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.
    Text reads: 'COMPLETE FULL-SPECTRUM AMINO ACID FORMULA'. Green banner with muscle arm icon and three droplet icons below.
    Text includes: 'COMPLETE', 'ESSENTIAL AMINOS', 'MUSCLE SUPPORT', 'ABSORPTION', 'ENHANCED PERFORMANCE', 'NATURALLY FORMULATED'. Product packaging features with green accents showing various health supplement benefits.
    The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

    LLS - UGC

    Merchant video
    Text reads: 'ALL 9 ESSENTIAL AMINO ACIDS FOR MAXIMUM MUSCLE REPAIR' with bullet points about protein benefits. Athletic figure performing back exercise silhouetted against dark background.
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    • 9 ESSENTIAL AMINO ACIDS – CLINICALLY BALANCED FORMULA - Optimised blend of all 9 essential amino acids (EAAs), now with more L-Leucine and added L-Histidine for enhanced muscle support. Includes L-Leucine, L-Valine, L-Isoleucine, L-Lysine HCl, L-Phenylalanine, L-Threonine, L-Methionine, L-Histidine, and L-Tryptophan. Supports protein synthesis, recovery, nutrient absorption, and overall health.
    • 5G EAA PER SERVING – 300 HIGH-STRENGTH TABLETS - Delivers 5 grams of pure EAAs per daily serving (1g per tablet). With 300 tablets per tub, you get a full 2-month supply of fast-absorbing, muscle-nourishing amino acids — ideal for daily performance, recovery, and body composition goals.
    • FAST-ACTING & HIGHLY BIOAVAILABLE - Absorbs in under 20 minutes — significantly faster than food-based proteins. Get the building blocks your body needs, when it needs them. Ideal for rapid recovery, lean muscle support, and daily energy demands.
    • CLEAN & VEGAN – ZERO FILLERS OR ADDITIVES - Formulated with zero binders, stearates, coatings, dyes, or fillers. 100% vegan and non-GMO. A pure, no-compromise EAA supplement for clean athletes and health-conscious users.
    • PERFECT FOR PRE/INTRA WORKOUT PERFORMANCE - Fuel strength, endurance, and lean gains. Take before or during workouts to support muscle protein synthesis, reduce fatigue, and improve recovery. Trusted by athletes, lifters, and high-performers alike.
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    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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