The ThermoFlask Insulated Stainless Steel 4 Lid Combo Pack includes two 40oz vacuum insulated bottles with four interchangeable lids, giving you the flexibility to choose between straw or spout styles for any activity. The double-wall vacuum insulation keeps beverages ice cold for up to 24 hours or piping hot for up to 12 hours, using Temp-Lock technology to maintain your drink temperature all day long. Each bottle features a wide mouth opening for easy ice cube filling and cleaning, and the bottles are dishwasher safe for convenient maintenance.

The 2-pack includes two folding straw lids for easy one-handed drinking and two leak-proof spout lids for fast gulping or pouring. The bottles are made from 18/8 food-grade stainless steel that is BPA-free and toxin-free, ensuring safe hydration. Each bottle measures 3.75 inches wide by 11.63 inches tall and weighs approximately 1.38 pounds. The 40oz capacity is designed for longer activities with minimal refills, perfect for the gym, yoga, outdoor adventures, or daily use. The product is backed by a limited lifetime warranty and is responsibly manufactured in China.