Marine Grade Fabric & Detachable Sidewalls :Made of waterproof and anti-UV marine grade fabrics 600D material with double layers of 1200mm PU coating and double overlapped stitching ,which is more durable and sturdy.The removable sidewalls with zipper allows quickly and easily zip off or zip on only one side or both sides of the sidewall. Adjustable Rear Support Poles Our bimini tops are equipped with 2 adjustable rear support poles which can quickly store The bimini top when shading is not needed. Easy folding and space saving.The angle and area Of shading can also be adjusted by adjusting the length of the rear support pole. Heavy Duty Frame 6000 Series High Strength Light Weight Aluminum Alloy Frame Diameter Up To 1 and 1.5mm thickness for maximum strength & durability. Abundant Accessories & Easy to Install this package ,you can get 2 adjustable rear support poles,2 windproof straps and 1 zippered storage boot.With the inclusive installation kit,the bimini top is easy to install with the instructions