The Tahoe Silicone Chug bottle is a workhorse. This bottle has a silicone sleeve for easy gripping and is made from durable Tritan䋢. The excitement, however, is in the lid! The one handed operation makes this bottle easy to use while engaged in another activity, it has a locking lid to make the bottle 100% leak proof, features an integrated Tritan handle for easy carrying but also stores out of the way and the wide mouth opening allows for controlled drinking rates. One Handed Operation - Push button releases lid allowing for easy use.