I've been slowly but surely playing the "what fits?" game with condoms for a little while now. I'm a virgin, but want to be safe and prepared when the time comes. I'm heading off to college this upcoming week so I want to be sure I have the right fit. Thus far I've tried regular size, magnums and magnum xl's. The regulars were without a doubt too tight. The magnums still left a little bit uncovered and I thought fit alright until trying the xl out today. The magnums were a little bit painful at the ring, which is where my member is thickest. I'm not sure if the xl's fit well or not. There was extra material, but that's not a terrible thing. I decided to take the xl's on a test run by masturbating and they moved a tiny bit. To be fair I was trying to be rough in order to test slippage and they moved maybe a mm or two. Nothing really came up on the net as to what constitutes "too tight" for a condom and safety is my #1 concern. The xl seems considerably more comfortable, but has more extra material and slides a little when being forceful. The magnums are a little bit painful, but stays put better and have less extra material. I'm only going to carry one condom with me at all times and I'm not sure which to choose. I'm leaning towards the xl because if it should slide off I'd notice and being to correct the problem. I know there are some pretty well educated people on the board on the subject, so fire knowledge this way and thanks for the help.