Safe Silicone Material: Made of safe silicone material, odorless and non-toxic, stain resistant and easy to clean, sweatproof and anti-bacterial, it won't break or fade even with daily use
Elastic & Soft: The strap is easy to install on your glasses temples for its elasticity and it is soft enough to keep your head comfortable even for long-time wearing
Anti-Slip Cube: With a moveable cube toggle and a small ring on it, this eyeglasses retainer can be adjusted and fit around your neck well and hold your glasses snugly against your head without sliding or slipping anywhere in vigorous exercise
Lightweight & Stylish: One retainer weighs under 0.002lb./1g, ultra-light like a feather, with stylish and colorful appearance, it is portable and fashionable for daily wearing
Convenient 5 Pack: 5 pieces in the package, it is a great accessory for water sports, hunting, shooting, driving, cycling, running, fishing, military & every day use