LEO-214/215: RG pattern type will not have cushion seams. NM, PS, and RS pattern types include one seam on the cushion, front seat rail, in-back, and outback at the back cushion break. LEO-210/211: NM and RS pattern types will not have cushion seams. RG and PS pattern types include one seam on the cushion, front seat rail, in-back, and outback at the back cushion break. LEO-218/219: RG pattern type will not have cushion seams. NM, PS, and RS pattern types include two seams on the cushion, front seat rail, in-back, and outback at the back cushion breaks. The bolster pillows are 12" x 22" x 2". The extra pillows are 20" and non-welted. Pieces are held together with mechanical clips.