NCAA Collegiate Guitar Strap - University of Michigan Wolverines - Black Leather Ends Straps are double-layered. The team logos are printed onto a polyester ribbon which are machine-stitched onto a polypropylene webbing. These straps are not only built to last, but to keep your guitar comfortably & securely strapped around your shoulders. Genuine leather on the strap ends. Pebble grain, 4.5 oz thickness. Maximum strap length is 60 inches Proudly Manufactured in the USA