I have been loving these shirts. They fit well for my athletic build. I hate it when a medium is actually baggy around the waist when I have a trim torso, but a large chest and back. The shirts have been very lightweight and nice to wear. Lightweight material might not last as long, but I prefer the airy feel. Definitely get the 70% cotton, 30% viscose mix. I've gotten several shirts now, and the only one that didn't fit properly, and that felt weird, was the 35% polyester, 65% cotton mix.