Our original wallet, the Compact Sports wallet, was designed because our founder HATED his thick, bulky wallet. Since men generally carry wallets in their back or front pockets, they need to be thin and comfortable. Since 2005, we have expanded our collection quite a bit to include a wide variety of models - trifolds, bifolds, money clips... so you can continue carrying the style you been loving for years [decades?] but now in a thinner, lighter, more durable material. All our men's wallets come in our exclusive nylon microfiber [10 times thinner than leather!] or our hybrid version, which is top grain cowhide on the exterior and nylon microfiber on the interior.