Sold by piece, not full set: Our sofas are made of high-quality chenille plush fabric, which is soft and smooth, making your sofa more comfortable and durable. (Sold by piece, not full set). How to choose: The armrest and backrest size recommends choosing 28" x 28" or 36" x 36". It is recommended to choose 28" width to fit sofas with a width of 24" or less, 36" width to fit sofas with a width between 24" and 32", and 43" width to fit sofas with a width of more than 32". For length, please add an extra 4" - 8" long to tuck in the sides, and it is better to have longer width and length than short. For example, your sofa size is 30" x 58", you can order a size of 36" x 63" to fit. .Fixed in place: The thick quilted sofa cover is designed with non-slip backing silicone rubber; it is more securely fixed in place than other ordinary sofa covers that use straps. Please note that minor adjustments are required for noisy dogs and....Multiple Functions and Applications: Protect your sofa, couch, loveseat, recliner and chairs from pets, spills, stains. The sofa cover is suitable for all seasons, not only can be used as a sofa cover, but also can be used as a play mat, bedroom rug, floor mat, window sill mat and more...Easy Care: Easy to clean, machine wash (cold water) and tumble dry (low temperature), do not bleach.