20 oz. stainless steel, double wall mug with a vacuum-sealed lid that will keep contents warm for up to 6 hours, and cold for up to 12. The mug is easy to clean and resists stains and odors, so you can focus on enjoying the outdoors. Plus, many come with leak-proof lids to prevent spills while you're on the move. Put water, tea, or your morning coffee in this camping mug before taking a long hike, fishing, hunting, or other activities that will stand no match against you with the temperature control technology. Product size: 3.125"D x 6.625"H.