On this leather strap the "lasso of truth" should be fixed. Textures and normalmaps are made manually. Rigid groups are used on the fasteners at the sides. To get the same metallic effect, connect the color input of the glossy shader to the output of the texture, reduce roughness to 0.1, delete fresnel and use a fixed value of e.g. 0.7 for the diffuse/glossy mix node. The transparent node is not used. You should then duplicate the material and use a more diffuse mix for the leather straps. The demo picture is created this way.