.TOPOKO Stainless Steel Vacuum Hydro Insulated Flask Water Bottles are the highest quality water bottles on the market. <br>Constructed from high-strength culinary grade 18/8 stainless steel, TOPOKO Water Bottles are built to last. <br>These bottles are rust proof, lightweight, and 100% BPA-Free. <br>This Vacuum Bottle is designed to maintain the temperature of your beverage for hours, keeping it cold for up to 24 hours or warm for up to 12 hours. <br>Lightweight and practical, TOPOKO Steel Water Bottles were made to go with you from school, to work, to the gym, outdoors, while playing sports, long trips, and everything in between. <br>Even when filled with Ice, this bottle can be left on your desk, table, and even papers for hours and not sweat a single drop.<br>You can choose Stainless steel lid,bite valve lid, sport lid or straw lid for this bottle.