The Duet Max makes a powerful return now with a sport-inspired design that offers a more accessible take on street style. Its rugged on-trend outsole gives it a contemporary edge while adjustable back straps ensure a customized fit blending functionality with modern flair., Rugged midsole sculpting., Pivoting adjustable back straps for a more secure fit., Ventilation ports add breathability and help shed water., Dual Crocs Comfort: Blissfully supportive. Soft. All-day comfort., Refer to Unisex Size Conversion. Product Sole displays US Size not UK.