【Authentic】 ERNIE BALL 4037 Guitar Strap Black POLYPRO STRAP BLACK Polypro Strap Brand: - A super standard guitar strap loved by many musicians including Eric Clapton, the ERNIE BALL / 4037 POLYPRO STRAPS in Black. This strap features a sliding adjuster made of Delrin material for instant length adjustment! *Please note that this is a used item and may have some slight wear and tear on the holes, so please refrain from purchasing if you are concerned about this. *We strive for prompt service, but please understand that this item is also for sale on other sites, and may be sold out there first.