●Polyester ●Fill up a delightful decorative pillow cover with these soft and plush pillow inserts that guarantee hypoallergenic comfort ●Throw Pillows suitable for both indoor& outdoor, good decoration not only for indoor furnitures but also for outdoor garden, patio, etc. They can be also used with waterproof pillow cases for double protection ●Tight stitching and upgraded polyester provide ultra toughness, which ensures all the cushions are well-filled and maintain suitable softness, while having sufficient support and will not become hollow ●The pillow inserts are compressed in plastic bag for shipping purpose, please gently tapping it to fully fluff up ●Pack of 1 throw pillow inserts, 18” x 18” square form, additional sizes and measurements to choose from,fill all your decorative pillow covers perfectly