Make My Day Comfort Double-Walled Glasses with Silicone Sleeve, Taupe, Set of 2 Comfort set of two hot-beverage glasses with sleeves from australian idea company make my day Food-grade, silicone rubber sleeve provides thermal protection and a non-slip grip; withstands up to 575 f (300 c) Double-walled glass insulates so contents stay hotter longer; provides thermal protection Dishwasher- and microwave-safe Each glass measures 3-1/4 by 3-1/4 by 5-1/4-inch; 10-ounce, 300 ml capacity