Soft and Durable: Earring backs are made of clear silicone rubber, pliable comfortable , Safe and hypo-allergenic Sufficient Quantity:100pcs Back earrings are enough for your spare and replacement, you needn’t worry about losing earring backings ever again Small and light: small and portable, this earring backs rubber with pad size fits for most earrings posts ,easy to put on and off Easy to Use:Easy to grasp, flexible fishhook earring backs slide onto the posts easily, and they stay on secure earrings not lost