Customized Mugs, 20 oz Double Wall SS Vacuum Tall Camping Mug - 12Hr Cold & 6Hr Hot, 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. 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. Samples currently unavailable, will be available stock shortly. ... #CMUG20 $12.68/each.