Our 20oz. Tan Silicone Sleeve Glass Tumbler with lid and straw is made of high borosilicate glass, a versatile companion for both hot and cold beverages. Whether you’re sipping on a refreshing iced drink or enjoying a steaming hot beverage, this glassware is designed to handle the temperature extremes with ease. The container is equipped with a removable, non-slip non-toxic type of colorful silicone sleeve for a secure and comfortable grip. This added feature not only enhances the aesthetics but also ensures that your drink stays in your hand. Say goodbye to unwanted odors in your drinks. Our reusable glass water bottle is crafted from high-quality materials that ensure your beverages taste just as they should, without any lingering or transferred smells. Dishwasher safe.