This is a nice Kala UBASS strap, suitable for use with the UBASS bass ukulele range. It has a nicely embroidered UBASS logo on it, looks very smart and seems nicely made - with a softer, woven material used.

The Kala UBASS strap works by pushing your UBASS strap button / jack input through a slit in a tough leather section at the end of the strap, then tying the strings on the other end around the headstock of the uke. While it has the branding on it, there is no reason you can't use this strap for other ukulele types, as long as they have a strap button or end pin fitted to them.

There is a leather section that slightly cushions the strap against your shoulder, for comfort.