$57.99 1/2 Gallon (64 oz.) PC Plastic Water Bottle w/ 48mm Twist Cap - Dark Blue - Walmart.com 
GEO 1/2 Gallon (64 oz.) Capacity BPA Free Plastic Sports Water Bottle with 48mm Steel Cap 
Amazon.com : AquaNation BPA-Free Reusable FDA Approved Food Grade Safe Tritan Leak-Proof Plastic 
