These insulated water bottles feature durable double-wall 18/8 stainless steel for long-lasting use. Lid interchangeable with all adidas stainless steel water bottles and glass bottles for convenience. Volume: 600ml; this water bottles insulated design is ideal for those seeking a water bottle insulated for both hot and cold uses BPA-free, reusable water bottle Vacuum sealed stainless steel bottle for 24-hour cold/12-hour hot liquids