In reply to Doug:
Hi Doug, I've spoken with OR and the confusion over numbers comes from new/updated styles. There are 3 new bivvys: the Interstellar and Stargazers ‘AscentShell' bivvys, which are/will be available in the UK and the Helium Emergency bivvy which isn't available.
In addition there are two updated bivvys: the Alpine and the Helium. I've removed the '5' from the title to make it less confusing.
That's definitely the most I've ever written "bivvys" - is that even the correct plural of "bivvy" or it is it "bivvies"!?