Inov-8 Ultraflask 0.5 (Soft Flask) Mens · Head Size: 499cm²

·    Head Size: 499cm²

The X-ONE BIPHASE string is the most efficient in this range on the 3 criteria of playability

and players no longer have an excuse to remove the safety eyewear during a sports game

Head Size:  480 sq cm

Inov-8 Ultraflask 0.5 (Soft Flask) Mens · Head Size: 499cm²No more leaking bottles! Eliminate accidental leaks with the 500ml Ultra Flask featuring an auto sealing high flow phaser bite valve and a twist locking cap which shuts off all flow to the valve, allowing you to stash it in your waist pack without the worry of annoying leaks. A large 42mm cap entry ensures quick and easily refilling at race aid stations, while the soft and flexible design ensures it shrinks down as you drink, reducing water movement