Description One notable feature of the Plana Avanti X3 fins is their ease of use. The inclusion of the classic ABS system strap enables quick and convenient adjustments with just one hand. Durability is another key characteristic of the Plana Avanti X3 diving fins. They are built to withstand the rigors of underwater activities and are crafted using high-quality materials. The fins also feature a 3-channel design, which allows the blade to arch during movement. This arching motion enhances the efficiency of each fin stroke, allowing for greater thrust with minimal effort. Additionally, stabilizers prevent water from flowing over the sides. This design element maximizes thrust, allowing divers to move efficiently through the water. Fin fit will vary based on thickness of the boot used with the fin, please use the EU sizing as a guide only. Blade length (from end of foot pocket to end of blade): XS – 13 in S – 13.7 in R – 14.5 in XL – 14.5 in Questions? Need help choosing the best gear for you? Contact Us for helpful advice, additional size, colour, and customization options (as applicable), shipping help, and more. Can’t find what you’re looking for? Let us source it for you! The availability of Back Ordered items may vary and require additional shipping time.