Robeez Tredz Classic Sandal Slip On (Infant/Toddler) 100% Leather Synthetic sole Casual lightweight, outdoor sole Ready for outdoors, with water-resistant, grippy, lightweight soles. Comfortable with soft leather construction and cushioned insoles to cuddle your baby's toes. Easy on, stays on with adjustable fasteners and elastic ankles to keep them on. Good for foot development with a flexible, lightweight sole. Podiatrist - approved. Robeez Tredz are running a full size large. Correct sizing guidance is reflected in the clothing size.