PRICES MAY VARY. INSULATION TECHNOLOGY: Each tumbler has double-wall insulated tumbler with a vacuum between helps your drink to keep its temperature from 6 to 12 hours. CONSTRUCTED OF 18/8 STAINLESS STEEL: Known for its strength and purity, our 18/8 food-grade tumbler won’t break, rust, retain or transfer flavors. Unlike other tumblers, our tumblers provide a clean, non-metallic taste. ANTI-LEAK, BPA-FREE FLIP LID: Each tumbler comes with an Anti-Leak, BPA-Free flip lid. The lid will…