Two layers of nylon webbing secure the D-ring to a 840 denier 42-oz. neoprene base. A strip of neoprene covers the nylon, protecting it from UV and abrasions. Colored Hypalon® is glued on top to complete the patch. 2" D-rings are stainless steel, and available in 6" or 8" patches. (8" patches are good for replacing D-rings that have been removed because it covers the area of the old patch.) • 2" Stainless Steel • 6" or 8" Patch Diameter • For Hypalon or Neoprene • Clifton Hypalon Instructions