In 1989, the company's PIPEline water slides opened at several locations. The Pipeline is a water slide that carries riders on 1-to-3 person inner tubes and is ProSlide's second most common style. The Pipeline has both open and enclosed sections; many have water curtains at the beginning and/or end of their enclosed sections. The first Pipeline rides using inner tubes opened at Fantasia de Agua in the Dominican Republic and Waldameer Park in Erie, Pennsylvania. Throughout the 1990s, several large park chains started opening new ProSlide Pipelines, including Cedar Fair, Six Flags, and Wet 'n Wild.