VERSATILE WEAR OPTIONS - The Avanti Pure fins can be worn barefoot or with light dive socks, offering flexibility and comfort for various diving conditions. The soft foot pocket ensures a snug fit, providing superior comfort BI-MATERIAL OPEN HEEL DESIGN - Featuring a bi-material construction, these Mares fins combine durability and flexibility. The design maximizes performance and comfort underwater, offering optimal propulsion without sacrificing the lightweight feel ERGONOMIC HEEL PAD - Avanti Pure fins are designed to reduce pressure on the Achilles tendon, the ergonomic heel cover provides extra comfort. This innovative design, helps prevent discomfort & fatigue, ensuring an enjoyable diving experience EASY-TO-USE ELASTIC STRAPS - The special elastic straps make putting on and taking off the Mares Avanti Pure fins quick and hassle-free. The design ensures maximum comfort during use, allowing divers to focus on their underwater exploration ELASTIC STRAP GUIDES FOR STABILITY - These Mares Avanti Pure fins are equipped with elastic strap guides to keep the straps securely in place, preventing rotation of the foot pocket. This feature enhances stability and improves overall performance