The Mares Power Plana (XR Line) is the brand's rubber fin built mainly for extended-range and technical diving. It is moulded from natural rubber with reinforced ribbing, which makes it heavy, solid and very hard to damage, the qualities technical divers want underfoot.

The ribbed blade loads water well, and drain channels let trapped water escape. The result is strong propulsion across every kick style, and the fin does particularly well with the frog kick that technical and overhead-environment divers use for precise, low-silt movement.

Because the dense rubber makes the fin negatively buoyant, it helps with trim, and the spring strap copes with cold-water and dry-suit diving. For Indian divers moving into technical training, the Power Plana is a long-lasting tool that earns its place.