Square Outdoor Cushions

Square Outdoor Seat Cushions

Premium square outdoor cushions are one of the most popular and versatile cushion styles for deep seating patio furniture, outdoor lounge chairs, sectionals, conversation sets, and replacement outdoor seating. At Cascadia Outdoor Cushions, our square cushion collection makes it easy to order custom-quality outdoor patio cushions in the most common deep seating sizes without the complexity of fully custom measuring. Choose from 24" x 24", 25" x 25", and 26" x 26" square outdoor cushions in multiple thicknesses including 3", 4", 5", and 6". Every cushion is custom made in the USA using your choice of over 800 Sunbrella® performance fabrics designed to resist fading, moisture, mildew, and everyday outdoor use. Customize your cushions with optional piping trim, fabric ties, and premium outdoor foam to create the perfect look for your patio furniture. Whether you are replacing worn-out deep seating cushions or updating your outdoor space with fresh fabric and color, our square replacement cushions are built for comfort, durability, and long-lasting outdoor performance.