The open-heel Mares Avanti Quattro+ are scuba diving fins designed for recreational, technical, and professional divers. 

• Four-Channel Blade Design: Uses Channel Thrust technology to flex and cup water, pushing a greater volume of water per kick for higher propulsion with less fatigue.
• Composite Materials: Built with a soft thermoplastic rubber foot pocket and a durable Tecralene technopolymer blade for an optimal balance of flexibility and energy transfer.
• Bungee Strap System: Standard-issue bungee heel straps feature large grasp-loops for quick, effortless donning and doffing, even in cold water or with thick gloves.
• Stabilizing Ribs & Tabs: Prevent ankle twisting and keep the blade tracking straight through flutter, frog, and helicopter turns.
• Boot-Entry Foot Pocket: Extra-wide open-heel pocket designed to accommodate neoprene dive boots or drysuit boots, with perforations to eliminate the "parachute effect".

Specifications & Sizing

• Weight: Roughly 2 lbs (0.9 kg) per fin (Size Regular).
• Blade Length: Approximately 15 inches (38 cm) for Size Regular (varying slightly from ~13 inches in XS to ~15.3 inches in XL).
• Sizes Available: Typically offered in XS, Small, Regular (Medium/Large), and XL.
• Colors: Available in multiple color options such as Aqua, Royal Yellow, White and Royal Blue