●Keep Insulated Year Round - RV Skylight Insulation Cover blocks the air and heat exchange between the inside and outside. This allows your Camper to warm quickly in winter and cool quickly in summer, reducing energy consumption. ●Installs Quickly - RV vent insulator inner is a highly elastic sponge. So you just need to insert it into the vent to install. Also can be removed easily. It is very convenient for daily use and cleaning ●Double Insulated - This insulator with a double-layer aluminum foil bubble surface, which could reflect 97% of radiant heat; and a 3inch thick insulation sponge fills the inside, these designs will keep your RV efficiently insulated. ●Full 2.8 inch of foam to help stop heat/light transfer. Fits 14"x 22" RV/camper shower skylights/vents. ●Comes with Bag and Velcro to help install and store when needed - Insulator arrives FOLDED & VACUUM SEALED, Allow ~24 hours to return back to perfect size and shape!