Durable. Reliable. Tough as nails. Grumman Canoes are hand-crafted from a special age-hardened, stretch-formed aluminum alloy. The aluminum alloy is substantially stronger than traditional alloys, giving it the power it needs to perform and last. Each canoe is hand-riveted with specially-designed T-6 Alumilite rivets for maximum strength along gunwales, keels and ribs. The stretch forming process permanently shapes the curves designed into the bow, stern and sides for maximum strength. For added rigidity and unbeatable strength, Grumman Canoes use die-formed aluminum ribs and thwarts, and solid aluminum extruded gunwales. In other words, better parts mean better canoes. Known as the "green metal," aluminum is one of the most environmentally friendly metals because of its sustainability. As the most recyclable industrial material, aluminum can be recycled infinitely. Additionally, aluminum canoes last longer than their composite and plastic counterparts. 100% designed, manufactured, and distributed from our facility in Marathon, NY USA.