Material: polyester ,breathable and comfortable. One size fits all, elastic construction all around will stretch to comfortably fit snugly any head size. This cap provides total head coverage, perfect for women with hair loss due to cancer, chemo. Washing Instructions: Hand Wash or Machine Wash, Cold, Gentle Cycle. Dry Flat or Hang to Dry. Do Not Bleach. The soft feel of this cap is ideal for women with sensitive scalps because it won’t itch or scratch.