Castelli quadra tretch W Jacket

The Squadra Stretch outer material blocks the wind during rides in cool weather or long descents, while the stretch inserts ensure that the jacket fits snugly to the body and doesn't flap.

• Coated ripstop nylon on the front and back and on the sleeves to block the wind
• Tightly knitted stretch inserts on the sides and sleeves provide a perfect fit
• High collar to keep drafts out
• Reflective details on the chest and lower back for visibility in low light conditions

This is a modern interpretation of the wind jacket that you can pack in your jersey pocket for a long descent or wear during the first hour of your ride until it gets warmer. Such jackets used to be a simple affair—a nylon shell—but the lack of elasticity meant they had to be cut generously to fit all body shapes, both on the bike and before and after the ride. We have completely redefined what a wind jacket should be and how it is constructed. We added inserts on the sides and sleeves made from a very elastic yet tightly knitted material, allowing us to give the jacket a modern, close-to-the-body fit to achieve aerodynamic gains on any terrain. And it actually retains more warmth than a jacket that flaps around. We kept it very compact, so it takes up little space in a jersey pocket. The stretch inserts are treated to be water-repellent, which helps in light mist, but it is not intended as a true rain jacket.