Amazon.com: baibu 40 Inch Classic Solid Color Bench Cushion with Ties, Super Soft Indoor Outdoor Rectangle Bench Seat Cushion Standard Size Foam Pad with Non-Slip Bottom - One Pad Only (Grey, 40x15x3in) :
48 x 18 Bench Cushion | Cushion Connection
ARDEN SELECTIONS 48 in. x 18 in. Tan Leala Rectangle Outdoor Bench Cushion TH1AL08B-D9Z1 - The Home Depot