I love how this wallet turned out. The only reason I'm not using it myself, is the limited space in my purse. It's well formed, easy access, and has a lot of cool features.
The core is two different pieces of cardboard, giving it excellent stability that should help it last longer. There is a break between the two sides, held together by layers of tape, making it easier to open and lay flat without compromising the core's quality.
There are five credit card slots, one ID slot, two pockets on either side behind credit card slots, and a full length cash pocket. Within the cash pocket is a hidden pocket within a hidden pocket. The second hidden pocket is on the left side of the fold, designed to hide a spare house key, or whatever you can fit in there (spare cash, whatever). Beneath the strap is another hidden pocket.
The wallet is 4.75in (12cm) closed, 3.5in (8.5cm) tall, and laying flat open is 9.75in (24cm) long.
The velcro on the strap is heavy duty and should last as long as the wallet (or longer). All duct tape used to make this wallet is Duck Brand tape.