The VTech Sit-to-Stand Learning Walker is a multi-functional baby stationary activity center that doubles as a walker. It features a detachable activity panel that can be used on the floor for younger babies or attached to the walker for older ones. The activity panel includes a variety of interactive elements, such as piano keys, shape sorters, light-up buttons, and more. The walker itself has a sturdy design and wheels that allow babies to move around while holding onto the handle. With its educational features and mobility, this activity center provides a fun and engaging way for babies to learn and explore. It's a great Christmas gift that promotes both physical and cognitive development!