Hydrapak Ultraflask Speed 500ml snow study and sustainability come together to

and sustainability come together to make the 4-Quattro XT the perfect boot for hard chargers

Built with a new fit standard

A neoprene gauntlet lends extra protection when using pole wrist straps

Opens from 40 mm to 100 mm

Crafted by skiing pros and World Cup wizards

Hydrapak Ultraflask Speed 500ml snow study and sustainability come together toPart of our ultra light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, its optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube. Topped with a new feature, the SpeedFill cap, makes aid station refills a breeze. Ultra light weight, ultra useful.