Thermos Vacuum Insulation - A double-wall, airless barrier locks in temperature, keeping drinks hot for up to 7 hours or cold for 22|Durable Construction - The body is made with robust stainless steel inside and out, that withstand daily use and is built to last|Non-Slip Base - Keeps your mug steady on any surfaceso you can sip with confidence, wherever you are.|Clear Lid & Stainless Steel Straw - Designed for convenience, the secure, see-through lid prevents spills, and the high-quality stainless steel straw ensures a refined drinking experience.|Dishwasher Safe - Designed for convenience, this mug is top-rack dishwasher safe, making cleaning quick and hassle-free after every use.