The standalone ThermaPuff(TM) Ceiling Panel adds a layer of lofted insulation to the ceiling of your X1 Camper&';s tent, making it more comfortable in extreme temperatures. Insulation layer provides thermal barrier for both hot & cold temperatures. Provides substantial blackout of light for your X1&';s ceiling panel. MaxxAir option has magnetic flap for use of roof fan. R-Value: 3.4 Materials: Interior: Challenge RBC200D Recycled Polyester (10 plastic bottles per yard!) Saves about 1lb CO2 per yard CO CWR outside (no fluorocarbons) Water resistant coating inside Recyclable after use Insulation Layer: 3.6 oz Climashield synthetic insulation Made in the USA Strong R value (3.4) and used in Everest expedition clothing Exterior: Challenge RBC200D - Wolf Grey Included in ThermaPuff(TM) Ceiling Panel: 1 x Ceiling Panel Mounting Hardware Installation Instructions