Lox are an amazing new secure earring back. Despite being only slightly larger than traditional earring backs,their clever design actually locks onto the earring post - yet they are easier to remove than traditional backs - but only when you want to. Lox are hypo-allergenic. The part that contacts the skin is made from biocompatible plastic - the same as is used in medical joint implants, so no worries about allergic reactions. Lox work with 99% of all stud earrings no matter how thin or thick the earring post, and are available in either gold or silver tone so they will match all your earrings. Lox will even work with most screw type earring posts. Lox are very easy to use. Simply push on and then when you want to remove them, just squeeze off. Watch our video here. So now you can replace your traditional bullet earring back and butterfly scrolls with a secure earring back that will not loosen over time and fall off! Lox locking earring backs have been tested to simulate over 50 years of daily use. That’s why Lox come with a lifetime guarantee on their manufacture and materials.