Anti-Slip Function: These eyeglasses chain and ear hook set reduce eyewear slippage and prevent loosing glasses from face. Keep your glasses safe when you doing indoor or outdoor sports or activities. They can be used together or alone.

Eyeglasses Strap Size：8.5in /21.5 cm inches length, Elastic design allows to stretch up to 15.7in/40cm, applicable eyeglasses legs' tail width is 0.9 - 1.3 cm/0.32 - 0.6 in, suitable for most glasses.

6 Colors:6 various colors of blue/green/red/yellow/black/white, These colors are very fashionable, You can choose the best one to match your mood and sports environment, satisfy your different needs.

Eyeglasses Strap Anti-slip Eyewear Retainer Elastic Silicone Eyeglass Cord with Ear Grip Hook for Kids Adult Sport Multicolor 6 Pack