Have you ever wondered why the majority of custom performance wear is made of 100% polyester, instead of cotton? The main reason that custom performance wear is made of polyester is because of the fabric's amazing ability to wick moisture away from the body. 100% cotton absorbs sweat and dries slowly, making the fabric feel heavy. If you're playing sports in hot weather, wearing cotton will put you in a sticky situation, literally. Polyester, on the other hand, dries remarkably fast! This keeps you feeling cool during your workout. Polyester is also more durable, so it can withstand the wear and tear of daily exercise or sports practice better than cotton. All of BlueCotton's custom performance wear t-shirts are made of 94 to 100% polyester and are sure to keep you dry and comfortable while you're working up a sweat!