 Sport climbing in Britain and Ireland uses the French grading system, often prefixed with the letter "F".The adjectival grade attempts to assess the overall difficulty of the climb – taking into account all factors which lend difficulty to a pitch including technical difficulty, sustainedness, protection quality, rock quality, exposure and other less tangible aspects – for a climber leading the route on sight in traditional style.It thus resembles mountaineering grades such as the International French Adjectival System.