Threadless is a complete and utterly professional group of people that offer a variety of interesting products revolving around t-shrit design. The Select collection is a premium line of t-shirts, made from high quality fabric. They only downside is that they become a little pricey because of that, but I would rather pay more and have my favourite graphic last on the best t-shirt fabrics out there.
Basically, they cover both the affordable market as well as those that become really particular about the summer clothes they wear. It is a nice touch to the already satisfying range of products they hold, so another thumbs up to this dedicated community.