WATERPROOF: Our kids rain boots are totally waterproof that made with durable, flexible synthetic material with shiny glitter on upper, which are certified as free of harmful chemicals. Sleek surface makes these girls glitter rain boots extremely easy to wash with running water.LIGHT UP DESIGN: Durable anti-slip outsole with added traction can grip the ground well for keeping children safe when they are active stomping and running outside. And the boots light up with every step and very eye-catching! The great look and functions make it a practical gift for active girls.HUMANIZED DESIGN: The insoles for these toddler rain boots are made with cozy EVA.GLITTER RAIN BOOTS: These children rain boots are perfect for wobbly toddlers and energetic kids to splash on puddles, play in the mud.Note: The size is the inner length