The Ring Re-sizer prevents the ring from sliding off your finger, saving your valuable rings. Main Features: Universal Compatibility, 8 pieces in 8 different sizes, fit well for ring width from 1-10mm. Invisible Transparent Color, does not detract from the beauty of the rings. Insert-based Design, provides the ring size adjuster mold to the curves of the ring band. Durable And Comfortable, made of soft TPU material, abrasion and oil resistant and has good elasticity.