🍹 Stack, Sip, and Shine with Confidence! BPA-free and dishwasher safe for peace of mind. Perfect for both indoor and outdoor settings. National Sanitation Foundation certified for your assurance. Jam-free stacking lugs for seamless organization. Engineered for the hustle of restaurants and active homes. Commercial Durability Jam Free Stacking Shatterproof Design The G.E.T. 6608-1-BL-EC Heavy-Duty Plastic Restaurant Tumblers are designed for commercial durability, featuring jam-free stacking, shatterproof construction, and are BPA-free and dishwasher safe. This set of 4 tumblers is perfect for both restaurant use and active households, ensuring safety and convenience.