Avoid unfortunate spills with the Contigo Luxe Stainless Steel Insulated Tumbler with Spill-Proof Lid and Straw, 18oz, which includes a fully sealed lid and an inner valve in the straw that prevents spills for mess-free enjoyment. (Residual drops in the straw may come out when tumbler is tipped.) Added bonus? Double-wall insulation keeps liquids cold up to 14 hours. At the end of the day, the straw twists apart and all parts are top-rack dishwasher safe for an easy cleanup. Color: Blue. Gender: unisex.