The Zojirushi Sj-Tg08Xa Stainless Bottle is a high-quality insulated beverage container made of BPA-free plastic and 18/8 stainless steel. It features a vacuum insulation that keeps beverages hot or cold for hours. The lid conveniently turns into a cup, and it has a one-touch button for easy pour operation. The bottle also comes with an adjustable and removable strap for convenience.