Bouldering is a style of climbing without ropes, typically on walls of 4 meters high. Climbers focus on getting to the top of short and challenging routes using a sequences of different movements. The routes are called "problems", a specific advice a "beta" and the hardest part of the climb a "crux". Cushioned padded mats for safety are used in case of falls. Since 2020, it has become an Olympic climbing discipline, focusing on agility and problem-solving.