Vacuum insulated bottle is made up of a durable Premium Stainless Steel inside and outside, built to withstand the demands of everyday use. This vacuum insulated technology keep beverages hot or cold for hours This Thermosteel Bottle has unique, leak proof technology, which make this product easy to carry at school, travelling and work. This portable bottle from Milton flaunts a beautifully slender construction which looks sleek, elegant and attractive. The smooth steel body is a delight to hold in your hands. The sleek structure of this bottle makes it ideal for carrying with you on any day-trip or hike. Its compact shape allows it to be slipped into the side pocket of your bag for easy access. The leak-proof lid keeps your drink secure the whole time. Material: Stainless Steel