The cover cushion is made of and thicken sponge cover cushion, premium quality for long-term use COMFORTABLE CUSHION: The soft cover cushion makes carrying people more comfortable, long time sitting on the bike won't make you feel sour EASY TO INSTALL: It is easy to install or remove from your rear bike rack, universal for most bikes, such as hybrid bike, touring bike, mountain bike, motorized bike, touring bike, hybrid bike, road bike, etc. Carry your kids or friends on weekends and enjoy your leisure time not alone color: black material: PU leather size: 36 x 16.8cm Package Contents: 2 x Bike Rear Seat Cushion Only the above package content, other products are not included. Note: Shooting Light and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.