Some good cell phone belt clip holders are from Case-Mate and Vaja, according to Apartment Therapy. Case-Mate has a wide range of holsters, including horizontal and top-loader models. Vaja specializes in luxury leather products.
Vaja's holsters can be detached from the belt in their entirety, serving to protect the phone when not attached. Vaja's high-end leather products can also be customized, allowing customers to choose colors and different types of leather.
Sandman also manufactures cell phone belt clip holsters. Their product range includes Heavy Duty Police Style Belt Clips, which are suitable for belts up to 1.5 inches in width, notes Sandman.