Doors and rear panel are made of a solution dyed polyester Sur Last Series 70 for added durability. High UV, water and mildew resistance, and excellent tear and abrasion resistance. Windows are made of laminated polished vinyl material. Aluminum frame. Zip-Down windows. Quick and easy installation and easy to remove on hot and sunny days. Standard automotive type door opening. Can only be installed with Bimini Roof. Cannot be used with Snorkel Kit.