Patent pending silicone sleeve provides a great gripping surface and helps to prevent breakage * Bisphenol A (BPA), phthalate, PVC, polycarbonate-free and 100-Percent non-toxic * Glass does not add a chemical or metal taste to your beverage * Dishwasher safe, easy to clean, bottle and sleeve can be put into the dishwasher together * Wide mouth bottle makes it easy to add ice, citrus slices and tea bags