Chums5 MM Universal Fit Retainer - Patented Adjustable Sunglasses Cord (5 MM)

Chums 5 MM Universal Fit Retainer - Patented Tips Work with Most Eyewear - Unisex Sunglasses & Glasses Keeper - Adjustable Fit, Nylon Rope & Made in USA (5 MM, Olive/Gold/Black)

Chums Slim Retainer - Adjustable Eyewear Keeper - Thin Silicone Safety Eyewear Retainer for Women & Men

Chums Original Cotton Safety Eyewear Retaine-Unisex Keeper for Sunglasses-Adjustable Fit & Made in USA (Standard-End Size)