The Madison Freewheel Helmet. This great value helmet has plenty of features to keep you cool and comfortable allowing you to enjoy your bike ride. In-moulded polycarbonate impact shell maximizes strength, while keeping weight to a minimum. Madison Freewheel Helmet Features   Pro fit system is simple and easy to adjust, to give you the perfect fit Rear reflective panels makes sure youÔÇÖre seen day or night Pro-Blade visor system helps protect you from the elements 15 air ventilation ports to keep you cool Brushed internal padding for increased comfort Size: Small/Medium 50-57cm, Medium/Large 54-61 cm Weight:275grams Medium/Large