A shut slider to adjust the length of strap enabling it to be worn around the neck or against the .
An effective way to keep your valuable eyewear secure.
This adjustable strap will fit many styles of eyewear (excludes wide temple ends).
Prevent glasses fell.
Freely adjustable elastic length.
 
Material: Suede 
Length: about 70 cm
Application: Stationary sunglasses reading glasses optical frames