| Sol 72 Outdoor™ Dining ChairSeat Pad Replacement Cushion – 18L x 18W x 2.5D, Granite | 2.5 H x 18 W ... This outdoor seat cushion makes your favorite armchair even more inviting. Made from Sunbrella that's resistant to weather, water, UV rays, mildew, stains, and fading, this cushion features a square silhouette with two rounded corners that ... more | Wayfair | $61.00 $58.00 FREE shipping go to store |