DESC: Forget the twist caps and squirt bottles. Instead, keep this backpack bottle at your hip or side when traversing trails, riding across town or just going on jaunts through the neighborhood. The push-button sipper automatically opens and allows one-handed use so you can sip while pushing a stroller, steering a mountain bike or standing still - no caps to lose and no leaks! Cool touch exterior for when you fill with hot liquids, and keeps beverages hot or cold for eight or more hours. Fits most vehicle cup holders.