High Quality MaterialMade of soft and high quality silica gel, wont go yellow nor turn solid, with no feeling of sore ears after use, light weight even forgets its existence^ Anti-SlipNever lose your glasses or sunglasses again. Soft silicone eyeglasses retainer assure a perfect fit to prevent your glasses from slipping, so you are free to do anything^ Amazing CombinationEach product has a total of 10 pairs, include 5 pairs of white glasses retainers and 5 pairs of black glasses retainers^ High ApplicabilityFits most Kids and Adult size glasses or Sunglasses, reading glasses, whether the temples are thin or thick^ Easy removelIt is easy to take it off when you do not need it in your normal life