●  Cushion and hip-support cushion effectively stabilize the user, and provide the most performance when using. ●  User can adjust the starting position and weight stacks when sitting ●  Mark the starting angle, so that each side are consistent, keep each training can proceed in exactly same way. Specifications DIM：(L)1084*(W)1158*(H)1500mm N.W：240KG Weight stack： Standard：80KG Max：150KG Muscles trained：Waist and Abdominal muscles