20 oz Java Vacuum Tumbler

18-8 Stainless Steel dual wall, Copper lined vacuum insulation,Deep draw liner for a more permanent vacuum insulation.,Vacuum insulation provides optimum heat retention at least 8X longer.,Featuring our lid that has lip and finger grooves that allow you to position the drinking spout without even looking.,Includes a leak proof screw on lid with a visual open/close push button locking closure that can come apart for easy cleaning.,Also features a silicone non-slip band.,Patented