The hair pins have small round balls with smooth-coated at both ends, which prevent from scratching the scalp and will not pull the cart or trap your hair, the wave shape design can avoid sliding off from your hair and easy to shape your hair.The bobby pins fit for most people and all types of hair, suitable for daily wearings and many occasions, such as parties, meetings,weding and so on, can be applied to diy your hairstyle by yourself at home.Our u-pins hairs are made of metal, sturdy and durable, not easy to bend or break, ensure to fix any hairstyles firmly, double smooth coating, not easy to fade, you can use them without concern.