I was looking for UnderArmour running shirts and found them at Modell's for about the same price as online. They have a very broad selection of UnderArmour items - everything from sleeveless t-shirts to underwear and in a variety of textures and colors, both in men's and women's styles. I like to be able to physically hold the item I'm considering purchasing instead of guessing online for something like this. Especially when trying to figure out the size for a loose verses compression shirt.
If you're looking for anything UnderArmour related, this is a good place to visit.