OTE Fulu Double Wall Borosilicate Glass Cup, Lead-Free Heat-Resistant Mug with Floating Gourd Design, Insulated Tumbler for Hot & Cold Drinks, Unique Gift for Home & Kitchen Lovers

1.Pre-Purchase Notes This is a hand-blown glass product. Minor imperfections such as slight bubbles, water ripples, tiny scratches, black spots, and uneven edges are normal characteristics of handcrafted glassware, and are not considered defects. Due to the complex manufacturing process, minor seams and subtle material lines may appear on the product surface. These are natural features of hand-blown items. 2.Important Precautions Do NOT use in dishwashers, microwave ovens, or ovens. High heat will damage the vacuum seal at the bottom, which is irreversible. Do NOT boil or steam the glass. It is not suitable for use with boiling water steamers. Handle with care to avoid impact or dropping, as glass is fragile. When filled with hot liquids, keep the glass out of reach of children and pets to prevent burns or injury from breakage. 3.Cleaning Instructions Rinse with warm water immediately after use for daily cleaning. For tea stains, use a mild, food-safe cleaner with a soft brush. Avoid scrubbing the vacuum-sealed base directly, as this may damage the seal. Do not use high-temperature cleaning methods.