Review on DefenderX RFID Blocking Carbon Fiber Aluminum Wallet: Sleek Minimalist Men's Accessory by Jason Taylor

Just the right size and tension. I love that you can add/remove the money clip and strap. I ride both at the moment and haven't had any problems. It took a few days to get used to, but I will never go back to the typical triple/double wallet. The lack of sitting on a bulky wallet every day led to a reduction in back pain, which I was skeptical about. I only wish I had switched sooner