Made from natural wheat straw fiber, BPA-free, and food-safe polypropylene materials. The healthier choice for family members, eco-friendly and sustainable to the environment. Light (only 5 ounces per mug) and easy to handle as compared to ceramic and glass mugs. Say goodbye to chips and cracks from dropping. Suitable for all age groups including kids, toddlers, children, adults, and elderly. Safe for use in dishwasher and microwave. The heat resistance of the mug is 248F(120C). The Ergonomic and thumb groove design handle allows for thumb rest and easy holding. The 30 degrees tiled handle allows the mug to dry easily without touching the rim of the mug against the tabletop, hence preventing the spreading of germs.