Boat part number 8303186 is a new jump seat cushion set from Crestliner Boats, part number 2156597 . Manufactured by Bozof & Meador, part number unavailable. May be used on other boats. These cushions are constructed out of two tone tan and brown marine grade vinyl with foam filled padding. Each backrest measures approximately 18 1/4" W x 16 3/8" H x 2" D overall. Each seat cushion measures approximately 18 1/4" W x 16" D x 2 1/2" H overall. See photos for suggested additional measurements, when cushions are mounted. These (4) cushions (two backrest, two seat cushions) create (2) seats. THESE ARE THE CUSHIONS ONLY - THEY ARE NOT CONNECTED WITH HNGES Specifications: Boat Manufacturer: Crestliner Part Number: 2156597 Part Manufacturer: Bozof & Meador Part Number: Unavailable UPC: 088472565975 Material: Vinyl / Foam Padding Color: Two Tone Tan / Brown Backrest Dimensions: 18 1/4" W x 16 3/8" H x 2" D Seat Cushion Dimensions: 18 1/4" W x 16" D x 2 1/2" H Sold as seen in pictures. Customers please note every computer shows colors differently. All measurements are approximate. Hardware and instruction / installation manual not included.