THE DEUCE JUST DROPPED. H2 IS HERE! ADVENTURE EDITION. Hydrology - The Science of Hydration Engineering Excellence and Quality Craftsmanship Engineered with outstanding quality craftsmanship, Hydrology uses double wall vacuum insulated technology with 18/8 premium grade stainless steel to deliver a high performance bottle that keeps your beverages ice cold for 48 hours or more and hot for up to 12 hours. We are the industry standard for stainless steel insulated bottles. Powder Coat Finish and Condensation/Sweat Free Hydrology has a powder coated finish for easy handling along with the vacuum insulated premium stainless steel that prevents condensation. BPA Free, Durable, Easy Maintenance, and Environmentally Safe Hydrology is BPA free, eco-friendly, and extremely durable. Wide mouth opening for easy filling, pouring, and cleaning. 3 Lids Included: The All New Spout Lid, Flip Lid, and Handle (*NOTE: 64 oz comes with Stainless Steel Lid instead of Flip Lid) Introducing the all new spout lid that is great for chugging or gulping down a cold drink after a long hike or session at the gym. The flip lid is ideal for your hot coffee or tea beverages. The handle lid is stylish and practical for your everyday on the go needs. Hydrology is your go to bottle for life's on the go adventures! HELP US SAVE THE WORLD! Join us in our pledge to reduce single use plastics Keep your drinks cold and help the environment. Less plastic. More Hydrology.