This slim bi-fold has a bike chain to keep it on a short leash. Never again will your wallet go on a walkabout -- this slim, ballistic nylon bifold connects to your belt loop by a thief-deterring bike chain. With special slots for your cash and cards, it's quite pocket-friendly (as long as it's your pocket). The slim profile fits easily in pockets and purses. This fine weave ballistic nylon wallet features the durability you would expect.