One size fits all. Works on all hair types. For women and girls of all ages. 1 piece. It is blonde color but does not have to match hair perfectly. There are only 5 natural hair colors available by Mia Beauty: blonde, light brown, medium brown, dark brown and black. The wig hair is attached to an elastic rubber band for a one size fits all design. It is handmade and measures approximately .75 inches wide but the width may vary. Thin and Thick sizes are also available by Mia Beauty. Mia Jumbo Braide is a braided headband made out of synthetic wig hair.