Seat Cushion 4"T x 30"W x 80"L (1836) "High Density-Medium Firm Plus" (Sofa Seat Replacement Cushion, Upholstery Foam, Foam Padding) Campers & Boats Foam Cushion High Density Seat Cushion 4"Thick x 30"Wide x 80"Long, 1.8 pound ILD: 36 (Medium Firm Plus) 100% Recovery Rate Free shipping to Continental U.S. Lower (48) States Sizing: Can Be Cut To Size and Shape With Long Sharp Knife or Electric Knife Uses: Ideal for furniture cushion, Seat cushion replacement, Upholstery sheet, Foam padding, Foam mattresses, Foam mattress toppers, Chair Pads, Seat Pads, Cushion,Chair, Sofa, Furniture, Pillow, Seat Cushion, Patio Cushion, Furniture Cushion, Rocking Chair, Car Seats, Upholstery Repair, Chair Upholstery, RV, Boats, Refurbished Vintage Furniture, and all other Home and Commercial Upholstery Applications. Care Instructions *** Foam packages need to be opened immediately once you receive the package to prevent damage *** must take the compressed foam out of the box *** unrolled to relax on flat surface for compressed foam cells to breathe in the air *** allow at least 3 to 4 days for the foam to breathe in order to recover its original size and form from being compressed for shipping *** we compress everything down to the most economical size to keep our shipping cost down