Features 1、Stainless Steel: Insulation water bottle is made of 304 stainless steel for the inner liner and 201 stainless steel for the outer shell, which meets FDA consumer standards, food grade and BPA free. 2、High Performance: Stainless steel insulation bottle is sturdy, corrosion resistant, dustproof, waterproof, rustproof, and leakproof with a single lid, no worries about leaking water or drinks. 3、Keep Warm and Cool: This thermal water bottle features a double walled design that keeps hot water at 52° for 12 hours while keeping cold water still effectively cold for 16 hours. 4、Large Capacity and Portable: The stainless steel vacuum water bottle is designed with a large capacity of 1000ml and a moderate size that doesn't require much space. 5、Scope of Application: Double wall thermal water bottle is perfect for travel, outdoor sports, work, beach, school, office, picnic, yoga, hiking, camping, biking, racing, etc. Item Type: Insulation Water Bottle Material: Inner Liner 304 Stainless Steel, Shell 201 Stainless Steel Size: Approx. 28 x 8cm/11.0 x 3.1in Caliber: Approx. 6.6cm/2.6in Package List 1 x Insulation Water Bottle