Sold by piece (not a set). The sofa cover is made of cotton fabric and polyester filling, soft and smooth to the touch and not easy to accumulate hair or pet hair. Please refer to our measurement guide and measure your furniture before ordering. This cover is sold by piece (not in a set) and is suitable for your adjustable sectional sofa and couch. How to choose - Width options - 28" width fits sofa width equal to or less than 24" - 36" width fits sofa width between 24" and 32" - 43" width fits sofa width over 32" - Length - Add 4" to 8" to the length to tuck in the sides - Width and length should be longer than the short dimension for a proper fit - Example: if your sofa size is 30" x 58", order 36" x 63" to fit - Armrest and back size - Choose 28" x 28" or 36" x 36" Multiple functions and applications - This soft furniture cover protects your sofa, couch, loveseat, recliner and chairs from spills, stains and pets. - Suitable for all seasons. - It can be used not only as a sofa cover, but also as a playmat, bedroom rug, floor mat, window sill mat, and more. Securely fixed in place - Heavy quilted sofa cover with non-slip backing and silicone rubber design. - More securely fixed in place than ordinary covers that use straps. - Please note that minor adjustments may be required if the dog is noisy. Maintenance - These modular sofa covers are suitable for fabric and leather furniture. - Easy to install, with no additional accessories required. - Easy to clean: machine wash cold, tumble dry cold, do not bleach. - Wash as good as new.