Above-ground pool cushion: For above-ground pools, this cushion is made from durable and safe material for long lasting use. It is an inflatable pool pillow. Winter pool cushion: This cushion stores easily when not in use and does not absorb water. Pool cover cushion: The pool cover cushion is equipped with four reinforced eyelets for rope attachment. It is a durable air cushion. Outdoor use cushion: The connections are sealed and inspected before shipping, guaranteeing that it stays inflated through the entire winter. An inflatable cushion for outdoor use. Use scenarios - Winter pool cover support: place under the pool cover to help distribute weight and reduce sagging or pooling. - Seasonal storage: easy to store during the off season without retaining moisture. - Secure cover with ropes: use the four eyelets to attach with rope, helping keep the cover in place against wind and weather.