Size:500MLA double-layered vacuum-insulated Flask designed to keep beverages hot or for long stretches of time. It is made of high quality 304 stainless steel that does not rust and lasts you a lifetime with copper plated inner wall for better heat retention Easy Clean refill & Re use comes with Travel Pouch.Vacuum Insulated Hot Bot is designed to keep your beverages fresh hot or for longer hours.Better Heat RetentionCopper insulation on inner side helps in better heat retention. Its made of finest quality stainless steel which is anti-corrosive & never rusts.Ergonomic Design with Travel PouchIts ergonomic design with pouch helps to carry and store the bottle with convenience & ease while on travel or work. Environment friendlyHot Bot is environment friendly which eliminates the need for single use plastic bottles.