A Puncheur is a name given to road bicycle racers that specialise in rolling terrain with short but steep climbs. Ideal races for this type of rider are the one day classics in spring. These races are characterized by hills that have a 10 - 20% gradient and are 1-2km long, examples include the Liege-Bastogne-Liege, the Mur de Huy in the Flèche Wallonne and the Manayunk Wall in the Philadelphia International Championship. Puncheurs are usually relatively well built, with broader shoulders and bigger legs than the average racing cyclist. The physique of this type of rider allows them to escape from the peloton through quick bursts usually with the assistance of a teammate. Examples of such racers include Philippe Gilbert, Simon Gerrans, Paolo Bettini, Danilo Di Luca and Peter Sagan, who are able to sprint their way up the shorter climbs to win a stage or a single-day race. However, their lower endurance is a disadvantage in stage races where the climbs are usually longer (5 - 20 km), albeit at lower gradients (5 - 10%). In stage races they often work as domestiques for team leaders, reeling in breakaways, or go on the attack to force rival teams to expend energy to close them down.