Easy to clean, no rust, no odour Leak proof stopper, Case not included 18/8 stainless steel unbreakable liner and case, vacuum insulated Retains hot liquid (97 deg C) temperatures for 24 hours (52 deg C) Retains cold liquid (2 deg C) temperatures for 24 hours (12 deg C) This vacuum insulation technology for temperature retention of hot or cold beverages. Perfect take-along for outdoor adventures, keeping beverages hot for 18 hours or cold for 24 hours Featuring a retractable handle, a detachable strap, and a lid locking system, this flask is a must have for the outdoors and on the go. It is very convenient to carry in daily life, such as running, driving, reading, and walking the dog, gym, yoga or outdoors hiking, biking, kayaking