I just started taking MMA classes and all my friends wear underarmor like shirts. Not exactly underarmor but shirts of similar material and there tight so they don't get in the way and there easier to roll with. They all say they just get them at Big 5 but I went and all I saw that was like it was underarmor and they were all eather to short or to big. How do I tell what size I am and are they supposed to be short? I want them to be really tight fitting could someone point out a specific brand and where to get them or what to ask for? Please need help with this so lost. Also with boxing and and wrestling not my main question but where can I get good shorts that are good to fight in?