Square pillows are 17 x 17 and lumbar pillows are approximately 20 x 14." All of our pillows are made from a soft yet durable polyester fabric, and arrive stuffed with poly-fill and sewn shut. Our designs are dyed directly into the fabric, so they won't peel or crack. Machine washable (Cold water, Delicate Cycle- Fluff, and Air Dry Flat) Not recommended for full outdoor use.