US-Box Fins
The US-Box is the most widely used fin system on inflatable and hardboard SUPs — a reliable, deep-set single-fin connection suited to everything from flatwater touring to river runs. Eisbach Riders US-Box fins are engineered and finished in Germany from eco-friendly materials, available in Touring and River Touring profiles to match the handling demands of each paddling style.
The Touring fin is shaped for maximum glide and tracking efficiency on open water. The River Touring fin is cut shorter and built with more flex — designed for the directional changes and underwater obstacles of river paddling, with a breakaway flex tip for safety in rocky or shallow water.
