The Speedzone X-Lite jacket is one of the lightest on the market: only 58 g (2 oz) for a medium size, the jacket offers a light and very practical protection. The back opening, patent pending, allows access to the jersey pockets and the visibility of the runner’s number, and the jacket can be compressed and stored in a pocket directly to the collar. The front of the jacket is made of X-Lite 19 fabric, an ultra lightweight, breathable and windproof woven fabric that has good abrasion resistance thanks to a ripstop construction. A waxed DWR finish protects against the elements. On the back and sides, X-Lite Mesh fabric provides optimal ventilation and comfort with stretch microfibre construction and tear resistance.