The Wave® My Wave 20oz. Double Wall 18/8 Stainless Steel Vacuum Insulated Water Bottle is the best way to hydrate. Thoughtfully designed, its dual opening drinking lid and steel straw appeal to those that want to chug and those that prefer to sip. The double injected lid provides a soft integrated carry handle and the main wide opening makes it easy to clean and add ice. My Wave has copper lining and keeps drinks cold for 12 hours. Carry it with you on all your outings as its tapered center with silicone grip makes it easy to hold and the silicone base offers extra protection. FDA compliant and BPA Free and top-rack dishwasher safe. Patent No. D781,664.