CHUMS RLSC100 Black Nylon Eyewear Retainers come 12 straps to a package and will keep your glasses securely on your head, around your neck and close at hand on the job, using a retainer also helps to reduce safety glass loss, lens and frame damage and scratches. Sold in packages of 12 retainers, also available in Blue (P/N: RLSC101).
See TnA Safety, Webster, NY on MacRae's Blue Book