The Lanai Collection Deep Seating Cushions are with Square Seat Cushions and Contoured Back Cushions - see the sketches for the shape of the cushions. This is the listing for our Sunbrella & Richloom fabrics. The breakdown for number of cushions and individual cushion sizes are below:
Sofa: 3 Seats & 3 Backs
Seat Dimensions: 23"W x 25"D x 5"T
Back Cushion Dimensions: 23"W x 19"D x 5"T