KRUVE Propel Espresso Cups, Handmade Double-Walled Glass Coffee Mugs, Clear 2.5 oz, Scientific Design for Better Tasting Coffee (Set of Two) - Unique Glass Coffee Cups with Headspace & Internal FinsBetter Tasting Espresso Enhance flavor with a scientific design that uses headspace, internal fins, and double to single wall construction. The PROPEL espresso cup is ideal for your espresso machine and elevates every coffee cup experience. Cool To The Touch Enjoy thermal control with double walled glass coffee cups that stay cool while keeping drinks hot. The unique single wall rim offers a refined mouthfeel, making this essential addition to your