The Maurten Drinkflask 550 ml is purpose-built for trailrunners who rely on hydrogel for energy. Its larger volume makes it easy to mix Drink Mix 160 or Drink Mix 320, while ensuring optimal hydration during long or intense sessions. With a soft yet durable design, the flask compresses as you drink and fits comfortably in your trail vest — even on technical terrain.

Key features and benefits:

- Generous 550 ml capacity – Ideal for longer or more demanding trail runs.
- Hydrogel compatible – Designed to hold 1x Drink Mix 160 or 1x Drink Mix 320.
- Bite valve – Easy, spill-free drinking on the move.
- Wide 42 mm opening – Simple to fill, mix, and clean.
- Reinforced 3D welded seams – Built to handle rugged terrain.
- Vest-friendly design – Fits most trail running vest pockets.
- BPA- and PVC-free – Safe and free from harmful chemicals.
- Freezer safe – Perfect for keeping drinks cold in hot weather.
- Trail-specific performance – Lightweight, flexible, and tough.

Stay fueled and hydrated wherever the trail takes you
With extra room for your hydrogel drink mix and a shape that adapts to your movement, this soft flask offers both freedom and function — designed for serious endurance athletes.