While not exactly what your asking about, my health issues in recent years meaning an inability to exercise has meant I've put on a bit of timber, & more importantly trousers fit me fit me differently if that makes sense ?, as a result I always seemed to be pulling them up, like all the time, combination of no waist & rugby players thighs, & when Airsofting I keep splitting combats just below the zip/fly buttons, I'd like to say it's due to my ample tackle (hence the username😜) but it's really the waist thigh fitment issue.
BUT recently I've discovered Karrimor Panther trousers, come in a number of colours including a pretty authentic od-ish green, & they stretch in EVERY direction, not only the most comfortable thing to wear, they look reasonably smart & no chance of me splitting them when squatting etc.
Bought them in every colour, including 2 prs in green, & looking forward to trying them in a skirmish.
Why not try a pair, around £27 each or sports direct UK are doing 2 pairs for £40, so their cheap enough to butcher a second pair for adding kneepad pockets etc ?
https://www.sportsdirect.com/karrimor-panther-trousers-mens-441630#colcode=44163016
PS im 38 waist, xl fits me👍