18/8 stainless steel, BPA-free Double-wall, vacuum-insulated cup Ergonomic handle Silicone base on cup Compatible with most espresso machines (cup height: 4.25 in) Dishwasher safe There’s a non-slip silicone base on the Latte Mug for a quiet, stay-still landing. The double-wall vacuum insulation keeps your drink nice and hot (or chilled) from the first sip to the last. And the circular handle makes the cup truly comfortable to hold.