Sold by Piece, Not Set: Our sofa covers are crafted from high-quality linen fabric, providing a soft and smooth feel while effectively resisting pet hair and dirt. Please consult our measuring guide before ordering to ensure the perfect fit for your adjustable sectional sofa or couch. How to Choose: - For sofa widths of 24 inches or less, select a 28-inch cover. - For widths between 24 and 32 inches, opt for a 36-inch cover. - For widths above 32 inches, choose a 43-inch cover. - For length, add an extra 4 to 8 inches for tucking in. It’s best to order longer sizes. For example, if your sofa measures 30 inches by 58 inches, consider a 36-inch by 63-inch cover. For armrests and backrests, we recommend sizes of 28 inches by 28 inches or 36 inches by 36 inches. Multiple Functions & Applications: - Protects your sofa, loveseat, recliner, and chairs from spills, stains, and pet damage. - Versatile use as a play mat, bedroom rug, floor pad, or window bench mat, making it suitable for all seasons. Stay in Place Design: - Features a non-slip backing with a silicone rubber design that ensures the cover stays securely in place, outperforming typical covers that rely on straps. Minor adjustments may be necessary for active pets. Easy to Care For: - Compatible with both fabric and leather furniture, these sectional sofa covers are simple to set up—no additional accessories required. - Machine washable in cold water; tumble dry on a cool setting. Do not bleach. Retains quality after washing.