1. plastic frame for marine use 2. marine grade pvc seat cover 3. mold sponge 4. aluminum hinge 5. stainless screws ... FOUNDED IN 1990'S. WE ARE A LEADING AND PROFESSIONAL SEAT MANUFATURE WITH A HISTORY OF MORE THAN 20 YEARS. WE CAN ... SEAT---DFYTZ-01B1) seat cover material: marine grade PVC2) Available color: red, dark blue,light blue, black, dark gray,light gray, white3)with ...