CASCADE RV Grand Room Sofa Lounge As all our rv furniture the feature Ultimate Leather that is as soft as calfskin, yet it cleans easily with mild soap and water. We recommend Saddle Soap.. The Cascade is the latest addition to our unique designs in RV Furniture. Our line of rv seats are better-than-leather, easy-care polyurethane combines the beauty of fine home style furniture with solid automotive engineering. One of the the best offerings in
a fine line of sofa beds and lounges.