Breathable, moisture wicking material helps regulate access heat to keep you cooler. Use with single leg pillow or connect to Legacy pillowcases for full leg support. Protects your leg & knee pillow by keeping them clean and extending the lifespan of the contour pillow. Easy to put on & stretches to conform to the pillows unique shape. Machine washable & dryer safe Contour Legacy Pillowcase Protector Cover, White