Width: 2,3" (6 cm) Adjustable Length: 37,4'(95 cm) - 56,29' (143 cm) Material: Leather Color: Black Master Key Black is a guitar and bass strap is a leather strap made of good quality cow leather with a vintage finish, 6 cm wide strap Adjustable with our exclusive R.A.S. adjustment system. If your guitar could choose for you without a doubt this collection of "Magic" straps would be the straps your guitar would choose.