Easy grip silicone sleeve, odorless, non-toxic, corrosion and mildew resistant, wide mouth for easy drinking and refilling, lighter in weight than competitors. BPA- Free, Phthalate-free, FDA approved. Material: Handmade borosilicate glass with silicone sleeve. H:7.8" x W:2.7" Care Instructions: Dishwasher safe. Not microwavable. Not suitable for carbonated beverages. Not Intended for children. Wash before first use. Do not scrape with rough tools. Use the product within the safe temperature rage. Safe temperature range -20°C ~ 85°C, -68°F ~ 185°F. Avoid freezing. Keep the product away from open flames and extreme heat. Keep the product away from sharp objects.