$56.99 HydroJug - 1/2 Gallon water bottle for fitness lovers! | Water bottle workout, 1 gallon water 
Ozark Trail 1/2 Gallon Double-wall Vacuum-sealed Stainless Steel Water Jug - Walmart.com 
Amazon.com : Insulated Water Jug 1/2 Gallon Assorted Colors : Sports & Outdoors
