Bumprider Sit is guaranteed to fit 100% of strollers, setting it apart from any other stroller board currently on the market. Suitable for children aged between 2-5 years old (approx.), it features a handy detachable seat giving children the option to either to sit or stand? perfect for tired little legs! Simple to install and with no tools required, family trips out will be a walk in the park! Features: Suitable for children from 2-5 years old (approx.) weighing up to 20kg Large standing platform with an easily detachable saddle-shape seat with handlebar Adjustable in both both length and height, for optimum comfort and adaptability No tools required to fit the board or to add/remove the seat Unlike other seated boards on the market, the unique universal connectors and adjusters make it possible to attach the board to unusually shaped or chunky frames and/or models without rear axles Unique suspension technique that ensures a smooth and easy ride regardless where you walk Dimensons: Product Length 48 - 52. 5cm Product Width 45cm Product Height 18. 5cm without seat 62. 5-67. 5cm Weight 3. 54kg (with seat)