Optimum Nutrition Electrolyte Powder

Optimum Nutrition Electrolyte Powder

Engineered with purpose. Worn with confidence

Regular price £7.39 GBP
Regular price £7.39 GBP Sale price £7.39 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.

    Product Description

    Top up your electrolyte levels with this replenishing formula, powered by sodium, potassium▲ and magnesium*. Perfect for use during intense training sessions. In two refreshing flavours - lemon and forest berries - Optimum Nutrition Electrolyte powders mix easily in water for a convenient boost to your workouts. * Magnesium contributes to normal muscle function & electrolyte balance ▲ Potassium contributes to normal muscle function ^ per serving OPTIMUM NUTRITION has been trusted to provide the highest quality in post-workout recovery, pre-workout energy, and on-the-go sports nutrition products for over 35 years and in 90+ countries worldwide. We hold ourselves to the highest production standards, all so you can unlock your body’s full potential. To find out more about the science and ingredients behind our products, visit OPTIMUMNUTRITION.com. * Magnesium contributes to normal muscle function & electrolyte balance ▲ Potassium contributes to normal muscle function ^ per serving

    Ingredients

    INGREDIENTS: Maltodextrin, Acids (Citric Acid, Malic Acid), Sodium Chloride, Potassium Chloride, Flavourings, Tricalcium Phosphate, Magnesium Oxide, Beetroot Concentrate, Sweetener (Sucralose), Colour (Riboflavins). May Contain: Milk, Gluten, Eggs, Soy, Nuts and Peanuts.

    Directions

    DIRECTIONS: Add 8g (~1 rounded scoop) to 450 ml of cold water and mix until powder is dissolved. Recommended consumption of 1 serving per day.

    Safety Warning

    STORE IN A COOL, DRY PLACE.

    Manufacturer Contact Information

    Optimum Nutrition, 4 Waterside, Citywest Business Campus, Dublin 24, Ireland. Optimum Nutrition, Unit 3, Romaldkirk Road, Riverside Park, Middlesbrough, TS2 1XA, GB.

    About this item

    • BALANCED ELECTROLYTE FORMULA: Delivers 400 mg sodium, 113 mg magnesium* and 300 mg potassium** to support muscle function for intense training
    • MAGNESIUM SUPPLEMENT FOR ATHLETES: This electrolyte powder contains magnesium, which contributes to normal muscle function and electrolyte balance
    • POTASSIUM ELECTROLYTE SUPPLEMENT: This electrolyte replacement powder includes potassium to help support normal muscle function.
    • ELECTROLYTE DRINK MIX: A refreshing electrolyte powder for workouts, pre-workout or post-exercise; mix 8 g with 450 ml water for easy rehydration
    • TRUSTED BRAND: From Optimum Nutrition, known for sports nutrition for over 35 years, this sodium-magnesium-potassium supplement supports active training
    • *Magnesium contributes to normal muscle function & electrolyte balance
    • **Potassium contributes to normal muscle function

    Ingredients

    INGREDIENTS: Maltodextrin, Acids (Citric Acid, Malic Acid), Sodium Chloride, Potassium Chloride, Flavourings, Tricalcium Phosphate, Magnesium Oxide, Beetroot Concentrate, Sweetener (Sucralose), Colour (Riboflavins). May Contain: Milk, Gluten, Eggs, Soy, Nuts and Peanuts.

    FREE UK Shipping on Orders £50+

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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.

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    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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