92% recycled 18/8 stainless steel. Holding about 17 oz. and engineered to keep it hot for a whopping 10 hours or cold for 20 hours, this streamlined, durable insulated bottle is perfect for hydrating on your commute, at the campground and anywhere you travel. Microlite Vacuum Technology – outstanding performance that’s a third lighter than traditional designs. Ingenious push-button, flip-top cap locks closed for transport, locks open for easy drinking. *Hand-wash only.