Just "acquired" a spam sleeping system from a bloke that knows a bloke. It's a great design: 1 x lightweight doss bag 1x Mediumweight dossbag 1 x zipped bivvy bag 1 x stuffsack. Basically the two doss bags can be put one inside the other to make a uber toastie bag, they attach together with poppers which run down either side of the zip. The doss bags attach to the bivvy bag also by the zip. The stuff sack has 6 points of adjustment long ways and 3 around the body. Finally both bags and the bivvy compress down to about half the size and weight of a bouncing bomb. Anyone know is there are any plans for a brit version of this? It's a very well made and designed item.