Because maintaining hydrated is as essential as a canteen in a soldier's life... These one-quart GI style canteens will do the job, they are made of 100% durable polyethylene plastic. Its screw-top cap is securely attached to the water canteen to prevent it from getting lost.

• 100% Polyethylene
• BPA free 
• Odor, taste, and chemical-free
• Cap is securely attached to the canteen
• Made in USA

These water canteens are BPA free, and plastic will not add taste, odor, or any chemicals to the water; instead, they will maintain its quality.