Probrella Portable Compact Umbrella for Digital Cameras / SLR - Protects Against Sun, Heat and Rain Damage Protective umbrella that gives 360 protection against sun glare on a camera viewfinder, sun flare on lens, heat and rain damage. It attaches to tripod screw socket or directly to a tripod screw. There is a slide bar that allows the umbrella to be moved 8.0" side to side. Material: Water repellant nylon. Travel: 360 degrees horizontally/vertically. Exterior Dimensions: 18 x 22" (45.72 x 55.88 cm) (HxW)