Freely adjustable elastic length.

An effective way to keep your valuable eyewear secure.

Prevent glasses fell.

A shut slider to adjust the length of strap enabling it to be worn around the neck or against the head.

This adjustable strap will fit many styles of eyewear.

Glasses Wearing Neck Holding Wire Adjustable Sunglasses Cord Strap Glasses Lanyard Eyeglass Retainer 2pcs(random Colors)