The first eco-crystal glass produced sustainably with respect for the environment. Rocks' crystal glass production facility is emission-free, and uses renewable energy to create 100% recyclable glassware. The result is an exceptionally high-quality crystal glass, a commitment to conscious luxury. Designed for those who appreciate centuries of craftsmanship, these 2 stunning whiskey tumblers serve legendary spirits. Spoil your loved one with a glass they will remember. Recipient's choice of glass style.