The LensCoat Combo 43 Memory Wallet (Black) holds up to 4 CF or QXD cards and 3 SD cards. The material is a lightweight, waterproof poly tricot/nylon. The wallet secures with a quiet elastic closure and is carried by a clip-on tether. All the interior pockets have clear windows so you can easily see which card you need. In addition, a handy business card slot is provided for that quick networking moment.