Premium Quality: Filler is 7D hypoallergenic fiber with good breathability and softness. The cover is smooth polyester fabric, comfortable, durable and skin-friendly. Soft but Supportive: Polyester fillings are well-filled so it does a good job keeping the shape brilliantly. Plump enough for lumbar support. You will feel great to lay your head on or use as a back support in a chair or sofa Great Decorative Pillows: Easily fluffy up to regally display your covers. These are great pillows for inserting into your favorite covering to add accents to your decor. Versatile for bedding, couch, sofa, office, etc. Product Dimension: Four 18x18 inch pillow inserts are included. The package comes with vacuum bags but immediately begin to fluff when you open the package. Please give it some time to expand to their proper size. Washing Tips: Machine washable in gentle cycle with mild detergent. Dryer friendly. Do not bleach. Standing some time will refresh your pillows. For best using feeling, the pillow insert is recommended for 18x18 inch pillow cover.