Ultimate Endurance Bundle: Energy Gels + Gel Flask

Name: Ultimate Endurance Bundle: Energy Gels + Gel Flask
Brand: Purendure
SKU: 18
Price: 30.49 GBP
Availability: InStock

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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.

The Mixed Energy Gels + Gel Flask bundle is the easiest way to fuel endurance naturally, sustainably, and efficiently. This pack combines our Banana and Mango Energy Gels with a reusable gel flask, giving you clean energy on the move without single-use waste.

Both flavours are made with just four real-food ingredients and formulated with a 1:1 carbohydrate ratio for fast energy and steady release. The included gel flask lets you carry multiple servings in one bottle, making fueling simpler during long runs, rides, races, or adventure days.

Every gel is Informed Sport Certified, meaning it’s independently tested for banned substances and trusted by competitive athletes worldwide.

How It Fuels Your Performance

1:1 carbohydrate ratio for efficient absorption and sustained energy
Fast + sustained energy from fruit sugars and date syrup
Electrolyte support from sea salt to help maintain hydration
Gut-friendly digestion even under high effort
Real fruit with no artificial taste or texture.

What’s Included

Purendure Energy Gels
Reusable Gel Flask (easy-squeeze, refillable, race-ready)

This is real food energy, made practical clean fuel, smarter carrying, and zero compromise.

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Ultimate Endurance Bundle: Energy Gels + Gel Flask