PS, NM, and RS pattern types will have seams on the seat rail, in-back, and outback at the cushion break. PS and NM pattern types on the 110/111 chaise will have a seam approximately 4 inches in from the cushion seam under the back cushion. The throw pillows and extra pillows are 20" and non-welted. Pieces are held in place with non-skid legs. Please remember to remove plastic caps before placement.