Try a Gossamer Gear torso length Nightlight pad (3.5 oz) paired with a GG 19.5" x 59" x 3/8" pad (5.3 oz). Put your feet near the bottom of the 3/8" pad then put the torso pad on it, dimples down, such that it extends from the small of your back to your head. This creates a depression for your butt (back sleepers) or hips (side sleepers) which is very comfortable. I now use this system (~ 9 oz) instead of a Big Agnes Insulated Air Core mummy mattress (~ 19 oz). In addition to weighing less, it provides much better insulation and will never lose air due to a hole or faulty valve.