11" x 11" Exercise Bike Seat The Perfect Solution for Hard and Uncomfortable Exercise Bike Seats Comfort Pain and Pressure Relief Gel Cushioning Steel Coil Comfort Spring - Pressure Relief Groove - Great for Tailbone, Coccyx, Lower Back, Buttocks and Prostate Pain and Pressure Exercise Bike Seat Adaptor and Instructions Included Large Comfortable Seat: 10-3/4" Wide x 10-1/2" Long