Dynamic Discs - Stainless Steel Water BottleOur 32 oz. (~950 ml) stainless steel double walled water bottles are designed to keep liquids hot or cold all day. This water bottle is designed to answer the call for your most grueling hydration needs. Keep drinks cold for 24 hours, hot for 12 hours: Our double walled vacuum insulation technology, keeps your beverages exactly how you put them in! Enjoy cold or warm beverages all day long whether you are outside playing a sport, at school or inside