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Lightweight and very comfortable, the Bollé ADAPT M helmet (55-59 CM) cycling helmet with 13 air vents offers perfect air circulation, reducing the possibility of head sweating. The helmet with AVID liner technology uses a combination of different EPS densities and optimized ventilation channels in the upper part of the helmet. The result is a lighter and better ventilated helmet with progressive shock absorption. CLICK TO FIT system allows you to adjust the size of the helmet including am option for vertical adjustment.