A standard BS64 4" wide strap designed the spread the load of a heavy guitar or bass. This cherry red strap has the old shape with a square rear end. It also has non-standard tan stitching and a suede underside. (Current straps have a nubuck underside.)
For more information on this type, go to https://www.pinegroveleather.com/bass-guitar-straps/bs64-superwide-bass-guitar-strap-red
Tech spec:
Strap width: 95mm
Strap length: 36-52" (92-132"cm)
Weight: 400g (14oz) approx