2.Size(Include the arm of sofa) :
If AB=90-140cm choose Single-seater sofa cover
If AB=145-185cm choose Two-seater sofa cover
If AB=195-230cm choose Three-seater sofa cover
If AB=235-300cm choose Four-seater sofa cover
3.Sectional or Corner sofa must need to buy 2 sofa covers,the size depend on the length of line AB and CD
For example:AB=200cm, CD=160cm,you can buy 1PC three seater sofa cover and 1PC two seater sofa cover
4.Each couch covers have Anti-Slip Foam Strips(Except for special models)