Kid’s Xdrain HydrologyThe knit upper offers comfort and breathability, ensuring your child's feet stay comfortable during their water activities. Surf Knit technology provides superior drainage and quick drying properties, keeping your child's feet dry and comfortable. The quick adjusting elastic bungee allows for fast adjustments on the fly, ensuring a perfect fit. A durable drain outsole offers quick dry and protects feet against rocks, hot sand, and other shore debris,