The  Vacuum water Bottle is made of high grade stainless steel(i.e. 304 Stainless Steel) same as the one used in water dispenser tank to assure you that it is ergonomically & hygienically Designed. Water bottle can be unscrewed at the top (in order to drink or pour)and upper mid section( in order to clean, fill up or pour). There is a safety handle/hook that will give you an easy buy strong grip on the bottle, which is also easy to carry and hooked to your bag or luggage. The fine finish is not only elegant but also assures and gives y a tight grip. Enjoy hot or cold water in this safe and elegant Vacuum water bottle.