●WATER-PROOF MATERIAL - Soft and high-quality foamed material to provide a enough support for your kids. ●ERGONOMICALLY DESIGNED - The seat is designed for young ride with more surface to eliminate the pain. ●EASY INSTALLATION - Comes with mount, just remove the old one and replace this one, no more hardware needed. ●WIDELY USED - Suitable for 12 14 16 18 20 inch girls bicycle with 22.2mm seat post.