Features:The revolutionary abs coaster put you on the fast track to great abs. Works your entire core, including he hard-to- reach lower abs, virtually eliminates neck and strain. The device promotes core stabilization by isolating the abdominal region and virtually eliminating any hip flexor involvement. Free-style seat movement Vinyl covered molded foam pads Product size: L130cm x W66cm x H125cm Saddle seat size: W37 x L41cm Track Length: 130cm Carton size: L128 x W39.5 x H39.5cm/0.199712cbmN.W: 28kg G.W: 32kg.