LT bimini top' s frame made from Aluminum or Stainless steel Canvas: 1200D polyester oxford with PU, waterproof and UV protect, or SunbrellaTM fabric top. All heavy-duty corrosion proof nylon fittings or stainless steel 316 fittings are available. Storage boot is enclosed. Rear support poles can be enclosed Specially designed ball joint Full range of sizes are available