Over 100,000 sold !!! Kids Eyeglass strap, simply fits into the back of glasses by snapping into the holes with a frame such as Miraflex, Kids Bright Eyes, or Dilli Dalli. Each strap goes through rigorous testing prior to shipping. 3 inches unstretched and maxes out at 6 inches unstretched. This strap even fits adult glasses full stretched. Ships from the USA and arrives VERY quickly! Straps ship out same day as order is placed or next day. ** SEE Other Listing for other colors **