Sandy coloured cotton canvas with brass ventilation eyelets. Central slot for the harness to pass through. This cushion is specific to the seat-type and dual-purpose harnessuit (combined flying jacket) and has a small webbing strap on the left side (as used). This was used to secure the ripcord housing in position as it passed around the parachute pack. This example has a Sorbo rubber filling (other variants use a dense compressed fibre or horsehair). Rather grubby/soiled and there are a few small frayed holes at the corners and a repair to one of the webbing straps/press studs. Marked to one side '37'. An extremely rare cushion. Stock code M19507.