HYDRAPAK - Shape Shift Reservoir Size:3 Litre It has also been shown

It has also been shown to help raise bodily levels of glutathione

Easy layering - Offset ankle zippers not only prevent irritation

Best Headgear for all levels of play

a low profile collar gives a performance fit

Compatible with all HydraFlex™ drink tubes

HYDRAPAK - Shape Shift Reservoir Size:3 Litre It has also been shownDESCRIPTION: Shape Shift baffle locks for a slim profile and increased stabilization; unlock for full volume and reverses for easy cleaning Slide Seal top opens wide for easy filling and closes tight for a leakproof seal High flow Blaster bite valve self seals after each sip and features a twist on off the bar to prevent leaks when not in use Plug N Play connect system lets you easily disconnect the drink tube (an auto shutoff valve prevents leaking)