★VACUUM INSULATION TECHNOLOGY★ Double-layer vacuum mug wall and three-layer mug bottom make it excellent in heat preservation and long in lifespan. ★18/8 STAINLESS STEEL & BPA FREE★ The 18/8 stainless steel makes the mug safe enough for direct contact with food. The mug lid is made from AS+PP, which is BPA and odor free. Thickened and widened mug lid and seal ring make it spill-proof. ★BRILLIANT PATTERN★ Colorful designs make it stand out from ordinary thermal mugs and give you more possibilities. Transfer printing makes designs of the mug vivid and the natural folding marks have drawn the nice outline of the mug. ★HUMANIZATION DESIGN★ The upper part of the tumbler is of a large size for easy cleaning and bigger volume. The lower part is smaller for easy holding and matching cup holders in most cars. The lids and seal rings are made thicker and wider for better leak protection than similar products. The pull-up design of the push-button lid enables one-hand operation. ★GOOD QUALITY★ Our products have been subject to many times of heat insulation tests and the insulation effect is guaranteed. We are always enhancing details and quality in the hope the customers can get quality of top brand with less money spent.