I recently purchased the summer tech moisture wicking shirt and although I've only worn it once I can attest to it's moisture wicking ability. The shirt is tight fitting and its all I wore under a leather jacket. Temp was 32 plus in full sun most of the time and the shirt worked really well keeping me sweat free and comfortable. I bought the long sleeved version which makes putting jackets over the top really easy too. I recommend the shirt and will probably lookat the winter tech top also for cooler weather riding.