Trail T-shirts are a lot of them, but most seem not to be made for biking. The Castelli Trail Tee features a lightweight 1% polyester fabric for quick drying and excellent moisture management, with a 3D mesh construction that lets air through to keep you cool. No more feeling like driving in a plastic bag. And the fabric is bluesign approved, so it is good for the planet. This t-shirt is suitable for everything from fast trail riding to enduro, being perfectly combined with back protectors and elbow pads. And because all Unlimited shorts come with pockets, you can complete the relaxed look and feel of freedom with this trail performance t-shirt.