So I noticed on one of my nitro finish guitars that behind the button on the tail where the strap hits the guitar that a spot is starting to wear. I currently have a strap that my grandfather gave me that he had from the 60's and honestly I'm not sure what the material is made of. I'm wanting to purchase a new strap that doesn't wear a spot in that area. What kind of material is recommended for the guitar strap? Suede, leather?