These Nylon Headbands, measuring 4''-5" fold over not stretched, have a variable length of 10'' when folded over. The width is 5 MM, making them suitable for all ages from newborn to adult. These headbands are incredibly soft and stretchy, perfect for growing with your little one. They are also versatile and can be used for a variety of hair accessories, such as attaching Faux Leather or Felt Bows, Ribbon Bows, and Flowers. Plus, they are one size fits all.