Fitnex X Series Velocity Indoor Training Bike Heavy-duty indoor training bike with stainless-steel 47-pound flywheel Anatomically designed polyurethane foam seat with vinyl cover Coil-spring shock-suspension system; long-lasting leather brake pad Belt-driven system is quiet and easy to maintain; inline skate wheels for transport Micro-adjustable seat and handlebars; measures 44 inches long by 25.5 inches wide