The FlexShade ZIP system from Draper Inc. in Spiceland, Ind., is similar to a standard motorized roller shade but incorporates a "zip" detail that is welded to the two vertical sides of the fabric panel. The zip edges of the fabric panel run inside inner channels in the side guide extrusions.
These inner channels are held inside the side guide extrusion and have cushioning pads to dampen the movement of the fabric panel under wind load.
The zip detail stops the fabric from being pulled out of the side guide and makes it very wind resistant, according to Draper.
More information on and sizes for FlexShade Zip can be found here.