Material: Borosilicate glass,food-grade PP, stainless steel 304;Weight : about 380g;Capacity: 230ml;Size: 7.0cm x 18.5cm; Made of Borosilicate Glass, Food Grade PP+304Stainless Steel+Silicone Gel+Nylon, Thicken rim and bottom, environmental and healthy, bring you an easeful life.Portable leakproof sleeve, soft and comfortable touch feeling, convenient to take out. A perfect match with your bag, cloth. Glass is a thicker Leak-proof design, high borosilicate glass is pure manual blowing to make Heat; resistance and corrosion resistance is higher than the ordinary good choice for homework, and outdoor The. Double-layer glass design, temperature resistant -20 ° C-120 ° C.