Asthall FR is an extremely hard wearing upholstery fabric with a herringbone weave.
 
Add a decorative touch to your boat, keep heating costs down and help to keep out draughts with these custom made Porthole Bungs. 
 
Custom made to fit your own windows,  with or without cutouts for window frame, with contrasting or coordinating piping (on front edge only) and backed with waterproof faux leather.  Fitted with a zip to allow the covers to be removed.
 
How to measure for Round Porthole Bungs
 
Measure your window from edge to edge of the wooden trim on the inside (see last picture).  The bung is designed to fit snugly in the gap to prevent draughts.  The depth of the foam is 4cm.