Nova Rubber Seat Pad 4200RS The Rubber Seat Pad 4200RS fits rolling walkers that have a flip up backrest. These include the 4200 (Cruiser), 4201 (Cruiser II Rolling Walker), 4203 (GetGO Rolling Walker), 4208 (GetGO Petite Rolling Walker), and 4212 (GetGO Super). It attaches to the rolling walker's plastic seat with 4 screws, and has a 1/2 inch of thick rubber, which helps reduce back fatigue when resting.