Rating: 5 / 5
I originally wanted to try the Lite Seat as a pack frame for my frameless pack. Its 1.5 inches thick when fully inflated, and weighs 3.5 ounces. Thermarest claims 3 ounces, but my scale says differently.
I loaded the seat into the backpanel of my SMD Swift, and loaded the pack with 25 pounds. The seat is rigid enough to brilliantly sustain these weights and transfer the load to my hips while staying comfortable.
And hey, it doubles as my camp seat!
But wait! There's more!
Take the camp seat and open the valve and let it fully inflate (5 seconds). Fold it in half and place it under your head as a pillow. If you let your head sink in a bit and close the valve when its most comfortable, the seat sustains a slight depression that gently and comfortably cradles your head. The material is also soft enough to be used against your face (but I have some facial hair, so my skin on my face may be less sensitive than others). It works for side sleepers, back sleepers, and inflation adjustment is super easy because the seat is self inflating. This works brilliantly as a pillow!
So, yes, a 3.5 ounce inflatable camp seat is a luxury for an ultralighter, but given its full potential, this becomes a valuable piece of my kit.