Scrim Jim is a strong, collapsible diffusion and reflector system. Frames are made of light weight aircraft aluminum. Modular construction allows you to create three easy-to-handle frame sizes. The unique modular design allows for easy portability as well as quick set-up and take-down. Fabrics are of the highest quality and have Velcro* sewn around the perimeter for a even, taut and secure fit to the frame, even during periods of strong winds.