Carbon Fiber Money Clip Wallet Credit Card Cash Holder. Made completely from real carbon fiber with a twill weave and a durable finish. You'll never have to worry about losing tension because carbon fiber will always go back to its original position, making this one a lifelong product. The design allows for as little as 1 bill to be held in place, or I literally just tested with 10 credit cards and 11 bills without a problem. Ultra lightweight, 12 grams to be exact...about the weight of 2 quarters. 1.5" wide x 2.8" Length.