Uneek adapts to the foot for perfect fit, with free-moving cords that provide freedom of movement, security and structure. Razor-siped outsole channels water away Recycled PET plastic bungee cord and lace-lock system Anatomical Footbed Gently used (as seen in photos) Clean and overall in excellent condition PLEASE REVIEW ALL PHOTOS FOR APPROXIMATE MEASUREMENTS AND OTHER DETAILS. FEEL FREE TO REQUEST ANY FURTHER INFORMATION. THANK YOU! 🌸 REASONABLE OFFERS ARE ALWAYS WELCOME! 🙂