- Columbia Kids Footwear Size Guide - A unique combination of style and comfort, the Columbia® Kids Techsun™ Wave active sandals would keep your little one's feet comfortable. - Mesh and leather upper. - Textile lining and insole. - Hook-and-loop strap closure. - Cupsole construction. - Brand's signature logo clip on the strap. - Pull tabs for easy wear and removal. - Open back. - Brand's iconic logo printed on the strap. - Techlite™ lightweight cushioned midsole. - Round toe silhouette. - Omni-Grip™ non-marking rubber outsole with high traction. - Imported. Measurements: - Weight: 3 oz - Product measurements were taken using size 4 Toddler, width M. Please note that measurements may vary by size.