Make My Day Small Comfort Double-Walled Espresso Shot Glasses with Silicone Sleeve, Red, Set of 2 Small comfort set of two espresso shot 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 by 3 by 3-inch; 3-ounce, 88 ml capacity