Bohemian Outdoor Patio Chair Seat Pads, Square Floor Pillow, Kitchen Chair Seat Cushion Pads, Meditation Yoga Seating Cushion for Home Kitchen Office Garden Patio, 19.7" x 19.7" x 3.9" - Walmart.com
Outdoor Square Edge Full Seat Cushion - Omnia - Pillow Perfect : Target
AIFY All in For You Square Patio Chair Cushions 18 X 18 (Set of 2), gray | eBay
BLISSWALK 19 in. x 19 in. x 5 in. Outdoor Seat Cushions Pack of 2 Tufted Patio Chair Pads Square Foam for Dining Chair (Apricot) HS203 - The Home Depot