Race shirts will be a long-sleeved tee by Tasc Performance. The Blaze shirt is made of bamboo viscose, making it super soft and naturally anti-odor. These shirts are rated 50 SPF and are moisture wicking, making them the perfect workout tee. Adult sizing is gender specific, so please consult the size chart below if you are unsure of the fit. Youth sizes will be 100% cotton short sleeve t shirts.