Complete sleep system featuring a Flatliner 3 Season Sleeping Bag the new and improved design that helps to make it our most comfortable bedchair ever! Completely flat frame for maximum comfort. Double hinges are designed to allow elastic to run through them ensuring consistent firmness in the whole mattress. Full Lumbar support – The head, middle and foot sections all benefit from our “Fold Over” Lumbar support design aiding the consistent firmness of the whole mattress. 50mm deep mattress that is constructed from high density foam and hollowfill allowing for a soft touch but firm construction. The mattress outer perimeter uses a firmer foam to reduce compression on the bed frame. Double hinges allow bed to be packed away with sleeping bag still attached. Side tension strap design (Two straps one on each side that go around the frame rather than over mattress) allows bed to be folded far more compact than beds with traditional single central strap. Velcro strips on the central underside of the mattress allows for use with all Fox sleeping bag covers. Sleeping bag connection zip on the underside of the mattress to allow any Flatliner Sleeping bag to be attached.