Swell 18oz Tumbler w/Lid Onyx

Built with triple-layered, vacuum-insulated construction that keeps drinks cold for up to 12 hours and hot for up to 4 hours for all-day use. Convenient slide-open lid provides quick, one-handed access to your drink with a thin, wide-mouth opening that suits coffee, tea, and cold drinks. Constructed from premium 18/8 food-grade stainless steel for reliable, long-lasting performance in daily home, office, and travel use.