Also, on topic, and from personal experience, jungle rot and falling apart clothes should be a thing, depending on how realistic you want it. If PCs don't regularly change socks every few hours, their feet will get trenchfoot and eventually literally rot. Google jungle rot, but be warned. It's gross. I've seen guys come back from a week of patrols where they didn't get to change their clothes, and their t-shirts and underwear were literally disintegrating. Mold and mildew is also a huge problem. You had to have plenty of baby powder or crotch rot (ranger rash) was horrible as well.
But again, it all depends on how realistic you want to make it, to really give the PCs the feel of just how horrible and oppressive the jungle can be. There's a reason why people living in tropical jungles don't wear much clothes