Stay dry and visible on every ride or run with the Optimum Ultimate Showerproof Nitebrite Cycling Jacket, a must-have layer for cyclists and runners tackling wet or low-light conditions. SPECIFICATIONS: Sport: Cycling and running Weather protection: Showerproof, windproof shell Visibility: Reflective Nitebrite detailing with hi-vis finish Weight: Lightweight layer, worn over your kit Season: Year-round, for changeable weather Sizes: S, M, L, XL, XXL SHOWERPROOF & WINDPROOF: A showerproof, windproof shell repels rain and blocks wind chill to keep you dry and protected from the elements. REFLECTIVE NITEBRITE HI-VIS: Reflective Nitebrite detailing and a high-visibility finish keep you seen by other road users, even in low light and after dark. LIGHTWEIGHT LAYER: A lightweight build makes it easy to throw on over your kit without weighing you down or restricting movement. MADE FOR CYCLING & RUNNING: Equally at home on the bike or on the run, this versatile jacket is built for year-round outdoor training in changeable weather. Available in sizes S, M, L, XL and XXL. Is this jacket fully waterproof? It's showerproof and windproof — built to repel rain and block wind chill in wet or low-light conditions. Is it suitable for running as well as cycling? Yes — it's built for both cycling and running in changeable weather.