Mares AVANTI PURE X Fins – Custom Comfort and Smooth Power in Every Kick Engineered for effortless performance and maximum comfort, the Mares AVANTI PURE X Fins redefine the open-heel fin experience with innovation and ergonomic design. Ideal for divers seeking a softer, more adaptable fin, the AVANTI PURE X delivers reliable propulsion and ease of use, even during long dives. At the heart of the design is the Quick Adjusting System (Patent Pending), allowing two bungee strap length settings to ensure a secure, personalized fit—whether worn barefoot or with Mares Pure booties. The soft, dual-material construction includes a highly comfortable foot pocket and a soft blade that enhances water flow using Mares' signature Channel Thrust technology, minimizing leg fatigue while maximizing efficiency. With a looped bungee strap puller, donning and doffing is faster and more convenient—even with gloves. The ergonomic heel pad also reduces pressure on the Achilles tendon, delivering all-day comfort in and out of the water. Designed for versatility, comfort, and a fluid kick cycle, the AVANTI PURE X is perfect for recreational divers and travel-friendly gear setups.