Spenco RX Heel Cushions provides comfort and relief to consumers with sore heels, and those seeking additional heel cushioning. Suitable for use in dress, casual, and athletic shoes (or boots). Cushions are simple to use - just place in shoes, green side up, and trim with scissors if needed. Cushions are made of easily washable Spenco patented material and fabric. To clean, hand wash in warm water and air dry.