In reply to Matt_b:
It just sits onto the stove, it doesn't lock without a bodge-style solution.
I've had mine in Scotland and the lakes in winter a few times, will tell all in Lundy (and can fetch it along if you like).
In short, excellent stove but not quite as versatile as the jetboil; overall i'd suggest that it's more efficient and works better in the cold than the jetboil I use for army stuff.