This is the big one - in fact, itâ€TMs the biggest water bottle Camelbak makes. This rugged, leak-proof Chute bottle has a high-flow spout that makes it easy to chug or pour without spilling. Plus, the cleverly-designed cap seals tight in just half a turn, and snaps easily into the handle to stay out of the way when youâ€TMre drinking. The 1.5 liter size is great for long trips or for refilling smaller bottles, and the stowaway cap makes it easy to drink or pour one-handed (no more fumbling to keep the cap out of the way while you drink).