Bicycle Bike Back Seat PU Leather Cover Cushion, YIFAN Bike Child Seat with Back Rest - Black(Line Pattern) Material: PU Leather + Sponge + 0.8cm Wooden Board + Non-woven fabrics. Cushion Size: About 13.4*6.2*1.9inch/34*15.8*4.8cm. Back Rest Size: About 10.6*6.7inch/27*17.5cm. Thick sponge provide comfortable feeling. PU fabric can be cleaned more easily Neat appearance make travel fashion and full of fun. The wide padded seat and backrest ensures a comfortable riding position. Easy to install on standard Back Seat and univeral for most of bike