The two-way valve solves the air leakage problem of traditional swimming pool cushions: The two-way valve makes inflation and deflation easier, can inflate and deflate faster without losing air, works perfectly with most pumps, foldable design, convenient storage. Prevent dead leaves and prevents dust from falling into the pool: This 1.2m winter pool cushion is made of high-quality materials. Made of high-quality PVC. Super durable and cold-resistant, excellent protection and helps the pool cool down. Withstand extreme climate conditions. Effectively protect the pool wall and pool cover: The pool cushion can create surface tension, protect your pool in winter, and effectively prevent the pool from being damaged after freezing. Water in the middle of the pool cover. It provides sufficient protection for swimming pools in winter and summer. : The air cushion absorbs frozen water as it flows past. As it expands, the expansion pressure of the ice above the pool wall above the ground is