There are lots of trail tees out there, but most seem to not really be made to ride in. The Castelli Trail Tee features a lighter-weight 100% polyester fabric for quick drying and excellent moisture management, with a 3D mesh construction that lets airflow through to keep you cool. No more feeling like you're riding in a plastic bag. And the fabric is Bluesign approved, so it's good for the planet. The tee is cut for everything from fast trail riding to enduro, since it fits with a back protector and elbow pads. And because all the Unlimited shorts have pockets, you can complete the relaxed look and feeling of freedom with this performance trail tee.