SourceHydration Bladder WLPS Low Profile - 3 Liter (100oz) Water Bladder with High Flow Storm Valve - Featuring All Hydration Technology Advantages

Tested it for a year on numerous hikes, no leaks whatsoever, all parts click into place and never let go, no smell or taste if you dry it well after use (I do). The only gripe would be tough moving lock at the end where you drink from, but overall cant complain!