(Certified Scuba Instructor at Scuba.com)
Hello Graham, I do have a call in with Poseiden to see if they make a 5' version of this hose. Because of the over press valve build into the hose, that could be the reason (cost) that they do not make a 5' version hose. There are ways to make 5' hose. If you combined the XS Scuba Poseidon Low Pressure Scuba Regulator Hose Adapter web link: http://www.scuba.com/scuba-gear-37/034540/XS-Scuba-Poseidon-Low-Pressure-Scuba-Regulator-Hose-Adapter.html
. with the XS Scuba MIFLEX Braided Scuba Regulator Hose web link: http://www.scuba.com/scuba-gear-37/034156/XS-Scuba-MIFLEX-Braided-Scuba-Regulator-Hose.html
with the 60" that would make what you are looking for. If you would like to place an order or have any other questions please feel free to give us a call at 1.800.347.2822.