DURABLE: environmental protection silicone material, non-toxic, will not be wet with sweat, and effectively prevents bacterial growth.
COMFORTABLE: The flexible design can fit your glasses well, soft, and safe enough for your head and neck long time.
ADJUSTABLE: has an adjustable buckle that adjusts the eyeglasses strap chain to fit your head size to prevent your glasses from falling off.
IDEAL FOR: perfect eyeglasses strap for sport, fits most standard-sized glasses and sunglasses as well.