Note: Our Sofa Cover Is Sold In Piece Of Different Sizes.Not Sold In Sets.there Are Many Size Options On Product Details Page.please MEASURE BEFORE PURCHASING. Please Send Several Pictures Of Your Sofa To Me If You Don't Know How To Measure Your Sofa, Then I Will Tell You How To Measure It, I Will Recommend To You The Right Size After You Tell Me Your Measurement results. This Sofa Cover For Sectional Couch Is Durable, Not Fade And Allergic, Protect Your Sofa Away From The Dust And Pets Hair, Provide Your Furniture A New Vision And Meet Your Home Decoration needs. Purchase Guidance (W X L). Armrest/Backrest Cover:70x70cm/90x90cm/90x70cm; If The Width Of Sofa Is Less Than 60 cm,Please Purchase Width 70 Cm Series. If The Width Of Sofa Is Less Than 75 cm,Please Purchase Width 90 Cm Series. It Is Recommended To Choose Larger Size, The Excess Part Of The Sofa Cover Can Be Inserted Into The Gap,Make The Slipcovers Not Easy To Fall Off.