These are certainly great pants, but they are advertised as mostly cotton, then lesser polyester. The first pants I received were the opposite, and the set I just received are 100% polyester. I am not sure how comfortable these pants will be in the jungle, but maybe others do know? Also, buyers please know that these pants are shipped from China; nothing wrong with that, just expect extra time in receiving your order. But seriously, ya'll need to update/edit/correct the material type for these pants. Seems to be a mixed bag of mostly polyester. These will be great in spring, fall and winter, but summer remains to be seen.