replacement cushion

Most replacement cushions have removable, zippered covers made from breathable, soft fabrics (polyester or blends are common). Many covers are machine-washable or designed for spot-cleaning; outdoor covers often add UV/fade resistance and water- or water-repellent finishes for splash protection.

Firmness varies by purpose: extra-firm or firm fills are common for orthopedic wedges and memory-foam support cushions, while medium or medium-firm options are typical for sleeper-style and down-alternative cushions.

Care depends on the type: many cushions have removable covers that are machine-washable (some allow tumble-drying), others recommend spot- or wipe-clean only, and a few list hand-wash and line-dry instructions. Always follow the product’s care label.

Sizes vary by cushion type: small knee pillows are often around 10.2 × 8.0 × 6.1 inches; many seat and patio cushions are near 24 × 24 × 6 inches; bedrest or sleeper-style cushions show dimensions like 20 × 20 × 13 inches or about 30 × 20 × 8 inches.

Common fill materials include memory foam (some with a cooling gel layer), high-density foam, polyurethane foam, polyester fiberfill, and down-alternative fills.

Common shapes and types include wedge-style pillows, leg/knee pillows, bedrest/backrest pillows, rectangular universal sleeper pillows, and seat and back cushions for chairs or patio furniture.

Thickness varies by type: many knee and seat cushions list about 6–6.1 inches, some wedge or bed-wedge options list around 7 inches, and larger bedrest or sleeper-style cushions are typically about 8–13 inches thick.

Listings often highlight ergonomic contours for spine, hip, or leg alignment; lumbar and back support; pressure-relief cutouts for the tailbone; non-slip bottoms for stability; and adjustable straps on some knee cushions to hold position.

Outdoor listings commonly cite UV-treated OLEFIN or polyester covers with fade resistance, water-resistant or water-repellent fabrics (typically protects against splashes but is not fully rainproof), removable zippered covers, spot-or-wipe cleaning, and often 6-inch high-density foam for seating.