Boxaerator Silicone Cups- Set of Four. These cups are perfect additions to the BOX-Ae-RATOR collection, providing unbreakable, ecologically-friendly, dishwasher-safe, vessels from which to drink Box Wine, each marked with a different logo, so you know which wine cup is yours...until you forget. Enjoy your Box Wine at the beach, during a tailgate, at the pool, knowing these glasses are durable and won't break.