Material: Double layer. Inner material: cotton; outer material: lace Size: One size fits all, the elastic construction all around will stretch to fit snug any head size Protect Head: Great for women dealing with chemotherapy or hair loss or to cover your hair for modesty or religious reasons. Also it is a perfect chemo gift for cancer patients Occasion: Fit for daily casual wear, sleep wear, pregnant mother wear, outdoor activities, riding, hiking, for hair loss GUARANTEE: 30 days free exchange and returns. Please contact us with any questions about our items and we will try our best to keep you satisfy. We firmly stand behind products sold by the MuYiTai online store!