TIANXI Stylish Portable Real Borosilicate Glass Water Bottle with Nylon Sleeve without infuser 550ml The body is made of high quality heat-resistant borosilicate glass and is not easy to burst due to the high or low temperature Cap is made of high quality stainless steel, and seals are made of food grade silicone, safe and sanitary. 550ml without Tea Infuser Imported China Comes in a gift box