Stiff heavy back for easy writing. Waterproof, magnet close can keep coin secure as well. Yellow/red card slots are bigger so can fit larger than average sized cards. Excellent quality
Only downside is its a little heavy and too big to comfortably fit in a chest pocket so I keep it in my front shorts pocket.
This is the best!! Its stiff to allow you to write and has a magnet to keep it closed. It is made of cloth and not cheap plastic. Be aware its width is large so it wont fit in a shirt pocket with a pen well. For game cards to http://www.kenaston.org/the-referee/Tools-for-Referees.htm