The Luisa Acqua glasses in Sand from R+D Lab combine the workmanship of noble artisans with a new perspective, to create a distinctive water glass that's functional, sustainable, and meaningful for modern life. Each piece is handmade using traditional mouth-blown techniques, in Italy from 100% Borosilicate Glass, known for its strength and purity. The Luisa Acqua glasses come in a set of two and are dishwasher safe and can hold both hot and cold liquids.