How AeroCovers Work: Breathing is important Temperature changes cause condensation to be inevitable. Aerocovers have a breathable membrane. This membrane transports moisture vapor outside and prevents water, dust and dirt from getting in at the same time. It is important to prevent mold and mildew from building up and extend the lifespan of your garden furniture or parasol. Good fit AeroCovers® feature sewn-in cords with 2 stoppers at 2 sides of the cover. This way it is easy to tighten your cover. L-shape covers are fitted with a belt and extra buckle. Lightweight and strong AeroCovers® are made from lightweight ripstop polyester. This makes them easy to handle and they take up little space when not in use. All garden furniture and lounge set covers come with a handy storage bag attached to the cover. The alternative for PVC The trouble with PVC/ Vinyl covers is that they do not breathe. Though manufacturers claim this, PVC covers can only breathe through air vent built into t