when changing the good on the oyster is the whole frame thing supposed to come off, or do you just zip the hhod off to change it>
I bought a hood off ebay that came with the frame also but i cant see how to take the frame off my existing one 
I havethe black/green one which i think may be an olde one does this matter?
I can zip mine off and zip the other one on so not a huge prob, am more curious really lol