Kansas City Chiefs No Spill Straw Tumbler – Welcome to Detroit Game Gear here is the product description. Eco-friendly straw tumbler comes with team-colored top and rubberized sleeve. The 20 ounce tumblers are BPA-free and highly durable. Retractable straw folds carefully into place to allow for a no spill closure. Double-wall, insulated construction helps keep beverages cold, while rubberized sleeve provides solid grip and keeps hand warm when holding cold beverages.