I've tried them all. Pure cotton. Pure bamboo. Pure Silk. Athletic synthetic fibers. With every tee shirt that came before, it was, at best, a passing crush. A flirtation. A moment when I thought perhaps it could last. But eventually, they were all passed on. Until now. Pure wool. Wool X. It's true love. This one is forever. The only problem I've found is that I want another as soon as possible, but the Grey Addie is sold out!