GU Flask 500ml

Name: GU Energy Labs GU Flask 500ml - GU Flask 500ml
Brand: GU Energy Labs
SKU: 43665598971955
Price: 18.0 USD
Availability: InStock
Rating: 5 (2 reviews)

4.5 (1,234)

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20% off first order

$18.00

Quantity

Color

Black

Quantity

Custom fit for running vests enables easy transport and storage
High-flow nozzle allows quick, convenient sipping during activity
Durable soft construction resists punctures and leaks
Capacity options for energy gel or hydration mix for tailored fueling
Compatible with hydration tabs and energy drink mixes for versatile nutrition

Summarized by Shop

5.0

3 ratings

Lightweight and leakproof

The flask is easy to use, does not leak and lightweight. I bought them to use on longer runs. Since they are somewhat flaccid after drinking from them, I think they might be better suited for usage with a vest. I tried using them with my flip belt, but taking them in and out after drinking is not easy.

Luke · February 16, 2026