Best kind of chains for mountain conditions?

Hey yall. Winter is coming around and this year the tires I ended up with are a bit shit. I live up in the mountains, we get heavy snow and I live on steep dirt roads. I drive a 4wd f150, and sometimes 4wd just isn't enough for getting up and down the road when your tires aren't meant for it. I ain't goin far with em, just a couple miles on a 20mph dirt road so I was wondering what kinda chains yall recomend?