INSULATED WATER BOTTLE: Goodbye sweat! The double wall insulation makes the Iron Flask sweat-free! It keeps your drink COLD for up to 14 hours. NOT recommended for hot drinks.18/8 PREMIUM STAINLESS STEEL: The Iron Flask is made of 18/8 Stainless steel that is 100% BPA free and non-toxic. It will never leave a metal taste or rust. HAND WASH ONLY WITH SOAPY HOT WATER!LEAK PROOF STRAW LID: Our lid is BPA free, 100% leak proof when in closed position and comes with a built in handle for easy carrying, US Patent Pending.DURABLE AND UNIQUE DESIGNS: Great kids water bottle for school or any active lifestyle, select from our many stainless steel designs. Customize it with the included 20 name stickers.100% SATISFACTION GUARANTEED: We guarantee that the high quality Iron Flask bottle will surely please you! If, for any reason, you are not 100% satisfied with the Iron Flask, we will issue you a full refund or an exchange!