Quick Installation: This curly messy hair bun can change your hair style in 15 seconds,it is easy to operate and saves you a lot of time. Adjustable Size: This messy bun with an elastic rubber bands, it can be adjusted for thin or thick hair. If the hair piece bun is too loose, you can secure with hair pins, which will make the hair bun tight on your own hair. Material: This messy bun hair piece made of high quality fiber material, the hair is soft, fluffy and lovely, with your hair naturally. Hair Bun Features: This hair bun Size: 6 inch, Weight: about 35 grams,perfect for adding volume and fullness to a updo or a ponytail.