In the catalog page 27:
http://cdn.hobiecat.com/digital_assets/87367227-international-sailing-parts-catalog.pdfHATCH BAGS FOR SCREW-IN LID HATCHES
Water repellent, durable nylon hatch bags provide secure
storage of your wallet, keys, tools, etc. while sailing. Designed to
work with screw-in lid type hatches with lip (Kit #5351B-5353W
and hatch #V1093-V1146). Simply drop in and they hang from
the lip of the hatch cover ring. Available in two styles: the cat bag
is a standard cylindrical shape and the fat bag expands to the
shape of an inverted hot air balloon.
5402 4" CAT BAG
5401 5" CAT BAG
5412 4" FAT BAG
5411 5" FAT BAG
5403 6" CAT BAG
5413 6" FAT BAG