Toy Set: you will get a stair climbing toy that comes with 9 cute little ducks, it also comes with a USB charging cable to plug in and use. The toy only starts when plugged in. Safety Material: this track is made of ABS material, safe to use and reliable. All parts of the toy are round and smooth, without sharp edges, which can protect children well when in use. Easy to Install and Carry: this roller coaster toy is small and easy to disassemble; after disassembly, it can be carried almost anywhere, such as indoors, to the garden, to the beach and to the queue, then it can be assembled in order, and children can start playing. Fun Design: the toy set is equipped with flashing LED lights, the toy has a fun soundtrack and uplifting music (with an on/off button). When it starts, the toy set climbs the stairs with the music and then slides down the slide. Practical Toys: this stair climbing toy with musical effects can promote the child's development. Fun songs and uplifting music can develop the child's visual perception, help them identify colors and help young children develop hand-eye coordination.