Here’s pictures of some custom Rite in the Rain covers I did recently. The first one is for the Field Binder. There are two pockets on the inside for 3×5 cards that also have an opening behind them to slide additional cards. On the front there is a large piece of velcro loop for attaching a 3×5 card holder. The holder keeps the card secure and is made with HDPE to give a hard surface to write on. There is also pen slots on the back capable of holding a Surefire pen.
The second is for the Field Book. It has the same 3×5 card pockets inside and pen slots on the back. Instead of the 3×5 holder on the front this one has a piece of 1″ loop for a name tape.