Sleep Number twin XL mattress (38” x 80”); mattress consists of very firm foam side/end walls to frame the mattress layers; two zippered casings hold the air chamber mattress; next layer is 3” memory foam; and finally a pillow top mattress cover that zips on the top. The mattress softness scale is 3-4 (soft, cushy); however, it can easily adjusted by inserting additional egg crate foam pads. The zippered casings allow this to be easily done. More air may be added to air chamber mattress for additional firmness (will need your own air pump). No remote control since the mattress is detached from the Sleep Number air compressor. Mattress is very clean, no signs of usage.