The A-Terra G2 is the most flexible bivie in the G2 range. The Terra can be used as a basic open fronted shelter, you can zip the internal front panel to the shelter to make a simple dome, then you can zip on an extension porch to create a dome with a shower canopy, then you can zip another front panel to this to create a seperate porch area. With the porch canopy and 2 front panels in place you have effectively created a 2 room bivie, excellent for those heavy winter nights or extremey heavy down pours. The Terra is supplied with the extra porch canopy and the two front panels, there is also two heavy duty ground sheets provided making this the most versatile bivie of all time. Available in standard 420D material and the excellent A.B.M.reducing ondensation. The A Terra G2 is without a doubt the most advanced bivie design available.