Available in marine vinyl, canvas, or crisp sailcloth.  AAS seats were first developed for mad people who want to row the Atlantic (hence the name - AAS stands for Atlantic Arse Saver!).  On these, the straps have moved  inside the cover to cut down on even the slightest strap-chafe risk. 
 
The standard foam inner is a combination of hard and medium recon foam, with a 1cm firm upholstery foam layer on the top.  This can be substituted for a top layer of memory foam if you have a particularly sensitive bottom, for an additional £5. The inner is wrapped in heavy duty plastic, to provide water resistance.
 
Fonts for name or club embroidery shown above.  Specific desired fonts can be found on request.  Letter embroidery is £5 an end and decorative embroidery £8 an end.  Specific image digitisation charge is £12.50.