Food-grade 316 stainless steel: the inner liner is made of 316 medical-grade stainless steel, acid-resistant and corrosion-resistant, safer than 304, long-lasting heat preservation and cold preservationDual-drinking port design: dual modes of drinking port + straw port, cold coffee with a straw, and hot lattes for drinking, adapted to different drinking habitsAdorable cartoon modelling: three-dimensional animal ears/fruit shaped lid, cute appearance, cup body printed with cute illustrations, face value online6 hours of long-lasting heat preservation: Double-layer vacuum insulation technology, 6 hours of heat preservation ≥ 65 ° C, cold preservation ≤ 10 ° C, commuting and travelling at any time to drink hot drinksLeak-proof portable design: Screw-on sealing lid, inverted without leakage, non-slip silicone bottom, with a portable handle, one-handed opening and closing ultra-convenient!