【Authentic】 ERNIE BALL 4037 Guitar Strap Black POLYPRO STRAP BLACK Polypro Strap Brand: - A super classic guitar strap, the ERNIE BALL / 4037 POLYPRO STRAPS Black color, loved by many musicians including Eric Clapton! This strap features a sliding adjuster made of Delrin material for instant length adjustment! ※ Although relatively clean, please refrain from purchasing if you are sensitive to used items. ※ We strive for prompt responses, but please note that we may sell out on other sites, so we appreciate your understanding if this happens.