Hydrapak Ultraflask Speed FAQ's
Everything you need to know before getting started.
Hand wash with warm soapy water after each use, paying special attention to the bite valve and cap threads. You can use a bottle brush for the interior. Let it air dry completely before storing. Do not put in the dishwasher or microwave.
The Ultraflask Speed is designed with a wider, shorter profile to fit the widest range of vest brands including Salomon, Nathan, Ultimate Direction, and more. It fits most vest front pockets and pack side pockets. The soft, flexible TPU material conforms to your pocket shape for a secure, stable fit.
No. The Ultraflask Speed has a maximum temperature rating of 60°C (140°F). It's designed for cold to room temperature liquids. For hot beverages, use an insulated bottle designed for that purpose.
No, the Ultraflask Speed is designed as a vest/pack flask, not a handheld. If you need a handheld option, check out the Hydrapak SkyFlask Speed IT which includes an integrated hand strap.
Yes! The Ultraflask Speed can be frozen (down to -20°C) with water or electrolyte mix inside. Many runners pre-freeze their flasks for hot weather runs. Just don't fill it completely full to allow for expansion.