These comfortable and lightweight strap sandals are the perfect fit for kids being active outdoors in sunny weather with a quick-drying upper, cushy midsole, and advanced traction. Available in kids' sizes. Columbia Sandals CHILDRENS TECHSUN VENT. This summer, try these sport sandals designed by Columbia! With a trendy blue colour, they are perfect! Get ready for an adventure! Product details: Flat heel, Fastening: strap and buckle, Open toe. Fabric content and care advice: Uppers: 100% polyurethane, Lining: 100% polyurethane, Cushioning: 100% polyurethane, Sole: 100% rubber.