【Best Gift】This tumbler can be used in cars, cafes, offices, and at home. Exquisite patterns, warm words, and practical performance make it the best gift for your aunt, I am sure your aunt will love it. Can be used as a Mother's Day, birthday, Christmas, Valentine's Day, Thanksgiving, or thank you gift..【Material Description】Double-layer design and the inner layer is 304 food grade 18/8 stainless steel, which can better achieve the effect of heat preservation. And BPA free, very environmentally friendly, non-toxic, and durable..【High Performance】Humanized design, safe and waterproof. Streamlined cup body design, beautiful and practical. Thickened non-slip design at the bottom of the cup for easy use and storage. The double-layer airtight design allows you to drink a cup of fragrant hot tea on a tiring journey, or to drink refreshing ice water on a hot summer day. (Keep warm for more than 6 hours, keep cold for more than 12 hours).【Protective Cover】To avoid spills and protect your drink from dust, dirt, and flies. There is a protective cap covering the bottle for full protection. Let you feel more at ease when using..【Easy Wash】It can be washed with clean water and can be recycled. For safety, please scald it with boiling water before using it.