Designed to completely cover the Cabrio Bivvy creating a twin skin, which will eliminate any condensation inside the bivvy during winter, whilst dramatically adding to the insulative properties of your shelter. creates twin skin to prevent condensation and improve heat retention during the winter months extends porch area by 40cm to create additional space to store boots, bait buckets etc. mosquito door/mesh panels with zip-down blinds to correspond with Compact Bivvy zip-in winterized PVC clear window for door dual height D-rings on front allow better pegging on uneven ground ball end tension straps provide additional tension for cover rod retaining straps at front and rear Weight: 5.8kg Supplied: in 600D carryall (pegs sold separately)