Suitable for children over 18 months and with the extra long seat post up to 5 years. The durable, all-weather mini-saddle is designed specifically for beginning riders and their tiny hips. Smaller, narrower, and lighter than a typical saddle, this seat allows for proper riding position and posture. The EVA polymer (industrial foam) tyres are super light and durable yet offer a smooth ride. Best of all, they never need air and will never go flat. See also A15 and A25