Chaise Lounge Cushions Outdoor: Measuring 26 x 80 x 4 inches(seat cushion 26 * 48 * 4 inches and back cushion 26 * 32 * 4 inches), the chaise lounge cushions outdoor are designed to fit most standard patio chaise lounges. Before purchasing the patio lounge chair cushions, measure your patio lounge chairs to ensure a perfect fit. Because the foam of the chaise cushion is vacuum packed, it takes about seven days to return to its original fluffiness after opening the package. Triple Waterproof Chaise Lounge Cushion: The inner layer of the lounge chair cushion cover is coated with PU, which provides the main waterproofing, keeping out about 90% of the water. Also, the fabric cover and foam lining of the outdoor lounge cushions provide protection against splashing, which further increases the waterproofing of the entire pool chair cushions. Tip: Do not recommended for machine washing the PU-coated patio lounge chair cushions.