Constructed of BPA-free, impact resistant Tritan copolyester, the MIL-STD 1-qt. Nalgene Canteen resists unwanted tastes and smells while carrying either hot or cold beverages. • Available pain, NO Blackhawk label.• BPA-free, impact resistant Tritan™ copolyster container is MIL-STD 1-qt.• Military thread configuration accommodates issued NBC caps• Freezer, microwave and dishwasher safe