This set includes one late ESCAPAC 1G-3 seat that was used in mostly later A-4 Skyhawks. This seat also contains the wrinkled parachute pack which some modelers prefer to bring "life" to the seat. If you prefer the tightly packed parachute packed seat(s) go check out sets 48212 (2) and 48213 (1) respectively. As always be sure to check references for the timeframe of the jet(s) you are building as these seats were retrofitted throughout each jets career.