Stainless Steel Coffee Travel Mug Tumbler 16 Oz ~ Flip Top Spill and Leak Proof Easy Clean Lid ~ BPA Free Plastic Interior ~ Rubber Grip ~ Foam Bottom ~ No Handle ~ Fits Most Cupholders (Blue) Locking flip-top lid prevents all spills and leaking. Double wall insulated with BPA free plastic interior to keep hot drinks hot and cold drinks cold for 2-3 hours. Contoured body holds the rubber grip in place and fits neatly into the hand. Simple mechanism makes for easy cleaning. Fits most cup holders.