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. 4" diameter fat bag style.