Rocks, rock fissures, crevices or huge overhangs face each climber with individual athletic as well as enduring and mental challenges. But where can you find all the climbers when it is snowing or raining? Of course, in a climbing gym to train. Yellow, red, orange and black cellars line the walls inside the climbing rooms, some of which can be up to 20 meters high. A colorful array of climbing sections is attached to them. Most of them are made of epoxy or polyurethane (PU) resin. Proholds is a young start-up that was founded by rock and nature lovers in late 2020 and remains one of the first companies in the world to produce and market ultra-realistic climbing holds without being stone. The company offers a variety of attractive polyurethane resin colors and currently 2 different texture types, including granite and sandstone, because a real rock feel can only be provided by real climbing rock.