Castelli Quantum Radiation Jacket

This is a windproof, water-resistant, stretch fabric cycling jacket, that moves in harmony with your body and doesn't restrict your movement, but is ideal for riding in cold wind conditions.
It has a Windstopper® x-lite stretch shell and a radiation long sleeve removable insert.
The insert looks and acts like tinfoil, reflecting your body heat back towards your body to keep you warm, but without the bulk associated with a fleece liner.
It also has a unique 5 pocket design, with two zippered security pockets, rear reflective flags and inserts.