This Henri De Rivel saddle features the new, innovative Rotate-To-Fit system in a luxurious, soft covered leather, offering the same design as our popular Rivella Close Contact saddle and providing the rider extreme comfort and a close contact ride. To adjust, simply remove the HDR nail head, rotate the Allen wrench provided, and replace the nail head. The saddle can be fully adjusted with just 3 turns of the wrench.