[Comfortable Bike Seat]The bike seat with backrest is constructed of sturdy and durable iron,pp and breathable and waterproof pu leather,thicken and comfortable seating [Adjustable Height Backrest]The bike saddles is equipped with 10cm/3.94inch adjustable height backrest controlled by rotating knob,easy to adjust to meet different people needs [Strong Load Bearing]The bike seat with 5cm/1.97inch thicken and 20cm/7.87inch width backrest is with reinforced base design,heavy duty,stable and long using time [Proper Size]The bicycle seat with backrest is in size 33cmx30cm/12.99inch x 11.81inch,suitable for both men and women,convenient using [Replacement Part]The comfort bike seat is also a wonderful replacement bike accessory part for outdoor biking,riding,bicycling,etc, Weight: 5.70115409532 pounds, Manufacturer: POXZSFX