The Cushions are made out of Sunbrela fabric which is the best for outdoor .. You can choose any fabric from Sunbrela fabric collections excluding premium fabrics, Cushions on chaise loungers are 3.5" thick and they are different sections but sewn together. comes with zipper and ties on back. If you need more thicker or extra work added like piping, please let us know. Inside material is 80% foam and 20% polyster. The Cushions are filled with high densified fibre( dacron) and they maintain their shape very well for several years. All the Cushions come with a zipper in the back side and ties if needed for easy removal when needed, you can remove inside foam material and wash cover when needed. Rich solid colors and stylish patterns to give your outdoor furniture new life. Covered in all-weather, easy-clean, colorfast Sunbrela fabric that repels water and resists chlorine, soil, and stains. ****NOTE: All cushion orders are custom orders and they are not returnable for cancellation, exchange or credit at any cost. If you are ordering cushions for your furniture that is not purchased from us then please update us the cushion dimensions that fits your piece so we can make the cushions accordingly.Some of the fabrics on Sunbrela website are premium fabric which are very expensive, may need to pay extra cost, Normally 4 digit code fabrics are normal fabrics and in the price range mentioned in the item description.