Superior performance, a sleek silhouette and an extensive collection of beautiful designs sets S'well apart. • Features Therma-S’well® Technology with triple-layered, vacuum-insulated construction designed to keep beverages colder or hotter, longer than all the rest. • The 17oz Original Bottle keeps drinks cold for 36 hours and hot for 18. • Offers a condensation-free exterior that won't sweat in your hands or bag. • Made from 18/8, food-grade stainless steel. • BPA/BPS-free and reusable. • Hand-wash only. •Perfect for the multi-tasker who likes to sip and go, the Flip Straw Cap is easy to use. Simply flip open for upright drinking and flip closed for leak-proof carrying. •The detachable stainless steel straw can also be removed to create a splash-free, sports bottle experience. Just flip open, tilt the bottle up and drink on the go. •Flip Straw Cap not suitable for hot or carbonated beverages. •Includes a S’well Bottle Handle for extra easy carrying.