NIMENJOJAMens 5.5" Athletic Gym Shorts Cotton Jogger Workout Lounge Jersey Zipper Pocket Sweat Shorts

Inner mesh liner?

if i wear bright colored panties under these in white, will my panties show through?

How should i wash them, by handwashing or using a washing machine. And just to be sure if its in a machine, what temperature should i use?

i am 33 waist what size should i get?