Buying condoms

Last night: I'm at a party with a friend of a friend, it's obvious we're gonna go mess around. I invite him to my place having told him I'm on my period, not really trying to have sex. He then offers to have period sex (the first fuckin time we hook up. I know. What a guy) but my dumbass doesn't have any condoms so he has to run over to his place, grab a condom and come back (all his choice i might add). Obviously, i need to buy condoms. But here's the deal, I'm not in a relationship with anyone. I need condoms that'll fit whenever i need them. Any suggestions on a good general condom just to have at my place?