Hydrapak UltraFlask Speed 500 ml

The hydrapak UltraFlask Speed 500 ML is a flexible 500 ml flask. It's designed to be close to you, to make hydration easier. Basically designed for mountain running and trail running, you can use it on your hikes. This bottle slips easily into the shoulder pockets of your rucksack, your trail bag or waistcoat and even into a running belt.

This flexible water bottle has a wide 42mm opening, making it easy to fill. It has a high-flow valve and a flip-top cap.

This flexible reservoir folds away when empty, so it doesn't take up too much space.