This is a scorecard and yardage book holder made from synthetic leather by Sunfish. This is used by all the big names on the PGA Tour.   Very high quality and built to last. 

Details:

Scorecard and Yardage Book Holder

It has five elastic bands to hold your scorecard, yardage book, hole location sheet, and even your pencil.

Size – 7.5″ x 4.5" – Fits perfectly in your back pocket!
The scorecard and yardage book in the picture are to show how it works and do not come with the holder.