riding jackets T-SP X Superair by Alpinestars. It is a short (waist-length) jacket, meaning its hem is above the waist. It belongs to the category of summer jackets. This means that it provides the necessary protection while also being breathable to allow air circulation and lower your temperature. It is made of synthetic fabric, a material that makes it lightweight. For this reason, it is preferred for prolonged use, such as city driving.