Keep this pink dot boo-bunnie® in the fridge or freezer and when boo-boos happen, apply to the hurt and watch the tears disappear! Each comfort toy: It is machine washable (Bunnie). Comes with a durable distilled water-filled cube that is dishwasher safe and packed in a PVC box for easy gift-giving Cotton. Polyester. Plastic cube filled with distilled water. 3.75" long. Care instructions: machine wash cold. Do not bleach. Dry flat. Do not iron.