Whether you're hanging pool side at the resort or heading out to the water park, the Rider Infinity Slide Sandal will keep your child comfortable even around the water. Featuring Rider's exclusive Soft-Dry Foam insole, with great arch support that is only found in the Infinity series. Soft-Dry Foam insole Synthetic midsole Synthetic outsole. Size: 13 M. Color: Black. Gender: Unisex. Age Group: Kids.