Material: Sport headbands are made of 95% organic cotton and 5% spandex,soft,skin-friendly,breathable,sweat-absorbent, micro-elastic stretchable, lightweight,moisture-wicking | Size: Chemo headwear one size fits most, elastic construction all around will stretch to comfortably fit snugly any size, don't worry about the size won't fit you | Design: Head wrap sweatband is desingned with dual use (cap and scarf), very cute and special, provides fullness to give the look of hair underneath | Adjustable: The comfortable material makes it possible for you to adjust the size to fit you well,never too lose or too tight.One size is suitable for all adults men and women | Application: Cancer headwear is great for hair loss or sleeping to conceal hair or to protect the head, suitable for chemo, therapy, running, climbing, hiking, skiing, snowboarding, or daily wear