Plastic Double-wall Mason Jar-shaped Tumblers, 16 Oz. Set of Four Red, Maroon, Purple, Green Assorted Colors, Travel Mugs, Drinkware, Glasses with Lock in Straw Spill Proof Set of 4 Mason Jar Plastic Mugs Assorted Colors - Spill proof Twist on Lid, Plastic Straw Double-wall design that keeps them from creating condensation when they are filled with icy refreshments.