Vert skating is a sport and a term used to refer to riding inline skates or roller skates on a vert ramp, a half-pipe with some vertical in it usually between 6in to 24in. Vert skating is a form of acrobatics performed with skates. The purpose of vert skating is to ride higher than the coping (which is the metal pipe on top of the ramp) and perform spins or flips. It focuses on complicated aerial maneuvers, such as spins and flips. The intent of the skater is to build speed until they are of sufficient height above the edge of the ramp to perform various aerial acrobatics. In competitions skaters have limited time, often less than a minute, to impress the judges by landing numerous and difficult tricks, having a good flow and consistency, having creativity with the routine and most importantly having a good style.