Flip, Bite, Sip: A gentle bite on the valve is what makes the water flow when drinking Vacuum Insulated: Double-wall insulation keeps drinks ice cold for hours; great for school, travel, and play Leak-Proof Design: Leak-proof when closed and spill-proof when open for mess-free sipping Durable Stainless Steel: Built to last with tough stainless steel for everyday adventures Easy to Carry: Comfortable carry handle offers grab-and-go convenience and fits in backpacks and cup holders