These are silicone anti-slip rings that can be attached to the "temples" of your glasses to prevent them from slipping down. The soft and elastic silicone fits snugly, allowing for comfortable wear even for long periods. The white, semi-transparent type is easy to match with any glasses and is discreet, which is also a key feature. -------------------- Contents: 10 silicone rings About Delivery: Delivered via postal mail, so you can rest assured even if you are not home. *Ships via standard mail. Please note that depending on the region and circumstances, delivery may take up to a week.