• Spandex & Nylon
  
•  Keep Glasses in Place, Quick & Easy to Put on And Remove - Each glasses neck strap is 11.8 inches long, with a black square double hole slider fasteners that can be adjusted as tightly or loosely as you want. The tubes on the ends tightly grip temples to secure glasses to head when cinched. Hang the lanyards-style glasses retainer around your neck when not in use and you’ll never lose your glasses again
•  Comfort, Durability & Stretchable - The glasses retaining strap is made of high-quality nylon and spandex blend material for maximum strength and stretch that is strong and won’t fray. Soft material & lightweight design feels naturally comfortable. They’re not only fashion glasses accessory but also completely practical
• One Size Fits All - Each glasses retainer has a round plastic adjuster that can be easily slid up and down the rope to tighten or loosen it to better fit your head shape and size, and the woven elastic band material ensure that it will stretch up to 20 inches, This also means that the glasses holder strap is suitable for everybody from babies to adults and every age in between
• Sports Accessories & Outdoor Must Haves for Men, Women, and Kids - Universal fit for workout, training fitness & exercise: summer water games, fishing, sailing, boating, hiking, hunting, shooting, running, baseball, cycling, driving & military. Fits standard-sized frames(plastic/metal/wooden/rubber/acetate). Suitable for polarized sun glasses/reading glasses/safety work eye protection goggles/anti fog glasses/motorcycle bike riding glasses