Nuby's Wash or Toss Cups are durable enough to use again and again, affordable enough to be disposable.Engineered to make feeding and handling easier, the new Wash or Toss Straw Cup is perfect for beginners and convenient for parents.The Free Flow hard straw is durable and the cup's contoured base is easy for little hands to hold.The cups stack inside each other, saving you storage space when they're not in use.Dishwasher Safe (Top Rack Only).BPA Free.