Quickly take a drink at the gym, during a run, or anywhere in the outdoors. This screw-top, narrow-mouth water bottle reduces spills while providing you with the sturdy, BPA-free Nalgene construction you've come to know.. . Made out of Tritan copolyester. Impact-resistant, leak-proof design. BPA free. Dishwasher safe. Won't retain odors. Screw cap design. Imported.