This set features advanced vacuum insulation, keeping drinks cold for 24 hours or hot for 12 hours. It includes a 40oz tumbler and two 32oz tumblers, each with three drinking modes and leak-proof lids. Made from BPA-free stainless steel, these tumblers are dishwasher-safe and eco-friendly. Price drops from $50 to $24.98 with free shipping over $35.