Blue Adjustable Silicone cord 

They are the ideal solution for keeping frames in the correct position on the face during sports or work and in the case of visual rehabilitation therapies to ensure optimal vision, while maintaining the correct optical center.

Adjustable eyeglass holder in hypoallergenic silicone.
Suitable for medium size temple tips. 
REACH tested.

The silicone cord can be shortened to size to ensure
greater adherence to the face and the maintenance of
the correct optical center.