Designed with rolled up buckle straps and reinforced nails fastened edges, these winter window covers maintain indoor heat through sealing while allowing easy window access without removal Ideal for homeowners, renters, and families seeking great temperature controlling solution for drafty window in apartments, older houses, or sunrooms Engineered with durability 3 layer construction ( Oxford fabric + cotton padding + Oxford backing), this window insulation set withstands seasonal wear while protecting against frosts and sun Install in living rooms, kitchens, or attics using the included tape – these thermal curtain double as hot weather sun barriers to keep spaces cool year round Staying warm this winter with our Thermal Curtain Set, featuring four size option, complete with tape fasteners and nails for instants insulation – triple layer Oxford fabric and cotton filling block drafts while reducing energy costs