16oz Vacuum Insulated Stainless Steel Tumbler

Screw-on lid with flap open closure features the leak-proof design
Leak-proof lid with "lock" function saves you from awkward spills and drips      
Double-wall, copper vacuum insulated, stainless steel construction keeps drinks hot for 8 hours and cold for 24 hours 
Fits most K cup coffee machines and standard car cup holders.