EYEGLASS STRAP DIMENSION: 21.5 cm/ 8.5 inches in Total Length, Hole Size is 0.9 x 0.2 cm, Elastic Design Allows You to Stretch the Strap Up to 45 cm

KEEP GLASSES SAFE: Match the Anti-slip Strap with Your Glasses then Wear It on Your Head, Effectively Prevent Glasses From Falling When Doing Sports and Outdoor Activities

DURABLE MATERIAL: Both Eyeglasses Straps Made of Soft Silicone, Which is Durable, Flexible, Lightweight and Comfortable, Soft and Durable, Comfortable to Head, Simple and Practical Design, Easy to Use

2 VARIOUS COLORS: Black White(2 PCS of Each Color). You Can Choose the Best One to Match Your Mood and Sports Environment, Satisfy Your Different Needs.

QUANTITY: 4 Pieces; Note: Applicable Eyeglasses Legs' Tail Width is 0.8 - 1.5 cm/0.32 - 0.6 in, Suitable for Most Glasses Legs Except Thin Metal Glasses Legs.

Silicone Eyeglass Strap Eyewear Retainers Sports Anti-Slip Elastic Glasses Sunglass Cord Holder for Men Women Eye Protection (4pcs/Pack[Black X 2 White X 2])