Fantastically ventilated with 31 inlets the bolle one road helmet 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 boll exclusive safety qr code and 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 eve