Our Innovative Food Grade Glass Leakproof Water Tea Bottle With Filter is BPA, BPS, PVC, Lead and Cadmium free. They won’t leach chemicals similar to plastic, won’t grow bacteria in its scratches, or rust like metal. Medical grade borosilicate glass expands and contract very little in extreme temps - preventing cracking in extreme hot or cold. This bottle has the best mouth size for no-spill drinking and we want to keep you sipping in case your lid breaks. The silicone sleeve provides impact protection layer and can generally withstand tips and short falls. Besides, it also insulates your drink and makes it easy to hold and quite to set down. It travels well to the gym, to work, or on the go.