A size-adjustable holster for carrying a wide variety of handguns in a wide variety of carry positions. The holster's body has a flat sheet with corresponding hook and loop fasteners on each side, allowing it to wrap snugly around almost any pistol. A clip is attached to the body for securing the holster to the wearer's clothing. The holster may be used by right handed or left handed individuals, for vertical or grip-forward carry. The holster may be worn inside the waistband, on the belt or waistband, inside a boot, or inside a jacket pocket.