RESTORE YOUR FURNITURE - Restore, Lift and Fix Sagging Sofas - (17”L x 66”W) | NEW DELUXE EXTRA THICK - New and Improved version; 60% thicker than competing brands! | EASY TO INSTALL - Slips under seat cushion to renew firmness and comfort | CORRECT YOUR SOFA AND POSTURE - Improves posture while making sofas upright again | HEAVY-DUTY WOOD BOARD - Made with heavy-duty vinyl-covered Engineered Wood board (17 x 66 in.)