Made for every family, the colourful LED pop stretchy tube replacement kit is the ideal fidget toy package for children with special needs. This fidget whistle toy is designed to help those struggling with sensory processing disorder and fine motor skills. Great when choosing a sensory toy for autists! When the expandable tube is stretched or compressed, the loud pipe will make a popper sound. You can then pull the glowing fidget tubes and connect them together to create many fun sounds. Get creative by twisting, connecting and bending the pull popper tubes into colorful shapes and letters. The stretchy tubes also contribute to improving bilateral coordination and can be used as a toy for physiotherapy.