Each item has the opposite gender version (except the MALE inner shirt).
And for the beezy cargo pants, you can have it low rise version for female sims if you opt out the "masculine" tag.
I have to be honest with you, I am not really proud of the gas masks' texture, it was soooo hard to make them look cleaner. I had them in HQ maps but they still don't look prefect. I think putting them on Hat area would solve the problem. But I really want to use them with other accessories. Just want to let you know :(
Happy simming! <3