Attached loop-top cap won't stays attached while you're drinking , New BPA-free Tritan material won't transfer odors or flavors to your water and is non-toxic , Fits in a standard water bottle cage; dishwasher safe and easy to clean , Resistant to retaining odors, staining, and is extremely durable; perfect for outdoor sports , This bottle is made from Eastman Tritan TM copolyester and is manufactured without Bisphenol A or BPA, a chemical found to disrupt natural hormones