Made out of Ecavalene, our most popular "race-weight" fabric for Tech shirts. Providing protection without overheating, Ecavalene is great for layering. Looks and feels like the softest of cottons- perfect for training or racing! These tech shirts are UNISEX; great for men and women! Our Long Sleeve Tech Shirt was and continues to be designed for use IN THE BOAT: - Rowers' cut (longer) arms and shoulders to prevent riding up the forearms at the catch. - Shorter front to eliminate extra fabric at your belly in the boat. - Long tail to cover you whole back at the catch. - Snug-fit to bring out the technical properties of the fabrics, maximizing wicking and insulation. - Fits beneath your unisuit for superb training or race day layering.