The kids can enjoy easy, hands-free drinking thanks to the Traveler with Flip Straw Lid, making it perfect for quick sips at lunch, in between sports, or afternoon hangouts. Therma-S’well® Technology with triple-layered, vacuum-insulated construction designed to keep drinks colder for longer. Flip Straw Lid for quick sips. Wide mouth makes adding ice cubes easy. Detachable straw for easy cleaning. Leakproof when closed. Fits in most cup holders. Soft-touch silicone handle for easy carrying. 18/8, food-grade stainless steel bottle and cap. Condensation-free exterior won't sweat in your hands or bag. BPA/BPS-free and reusable. Top-rack dishwasher safe or hand wash with warm soapy water.