Take your wine camping, on a picnic, or to a festival. These lightweight, nesting wine glasses go anywhere with their unique stem design that unscrews and allows the bases to be compactly snapped into the bowls for storage. Super lightweight and nearly indestructible, the BPA-free copolyester material will serve you for many more summits to come. Made of copolyester plastic, these nesting wine glasses provide excellent impact resistance and are suitable for both warm and cold beverages. Nesting Wine Glass Set