Fantastically ventilated with 31 inlets, The One is also perfectly designed to hold your sunglasses in its Sunglasses Garage' if you remove them during the race. With a focus on safety, The One features a specially-designed BOLL? LED. Its Click-to-Fit System ensures a perfect adjustable fit and its interchangeable winter and summer linings allow for year-round use. Complete with a detachable visor for mountain biking, The One offers you everything you need in a cycling helmet.