Custom Roll-Up Signs All mesh/roll-up signs require sign ribs for support. (Sold separately) Use Roll-Up Mesh Signs around roadwork, construction areas or job sites. Custom Roll-up Non-Reflective Signs (Daytime Use) The custom roll-up signs are made of a solid vinyl (not mesh) fluorescent orange material. Custom Roll-up Reflective Signs (Nighttime Use) The Reflective 36" x and 48" signs are made of a solid vinyl that is 3M Scotclite reflective.