DETAILS What Is a Pool Pillow? It couldn’t be any simpler. It’s a small, vinyl, inflatable pillow you place in the middle of your above ground pool, between the water and the winter cover. What Does a Pool Air Pillow Do? In this case, using a pillow isn’t about comfort. Well, unless we consider not having to replace your above ground pool as being comfortable, because that’s exactly the situation you may find yourself in if you don’t use a pool pillow. Sometimes also call…