Ooops.... mean first pic re the trainers.
Yet again...
Closer look both pics 1 and 2 are wearing Brit Aircrew overalls - for desert use. Must be new issue, in my day they were all OG. Pic 2 shows flap to cover pencil pocket on left upper arm, dinghy knife stowage in LH crotch, velcro cuff closures, front calf zippers, empty enclosure for pexiglass scratchpad on RH knee/thigh below First Aid pouch pocket and, if you know where to look, 'pockets' to contain leg restraint garters for bang seats.