Min. rider height: 57". MAX weight: 220 lb. Chest strap, arm rests, loop handlebar with hand brake, caregiver rear steering, adaptive foot pedals. Bike dimensions: 29.5"(W) x 59"(L). Lowest instep clearance: 9". Shortest/longest clearance from seat to ground: 25"/30". Shortest/longest leg length from seat to pedal: 25"/32". Dimension of back rest: 17.5"(H) x 14"(W), adj. height range 5". Wheel: 16 inch front and rear