High‑back chair cushions range from slim rectangular pads to thicker segmented sets. Examples in listings include slim pads such as 47.2" x 19.7" x 1.6" and 47.2" x 19.7" x 2.8"; single seat options around 20" x 20" x 5.1" or 22" x 20" x 5" with matching backs; and multi‑piece segmented sets (for example seat 18" x 18" x 5", back 18" x 23" x 5", headrest 18" x 6" x 5.5").
Many cushions designed for outdoor use include UV‑ and weather‑resistant polyester, water‑resistant or TPU‑coated fabrics, and treatments or materials advertised to resist fading, mold, tearing, staining, and mildew.
Common fastening methods include fabric ties or string ties, straps (including elastic straps), and multi‑strap or four‑strap designs. These attach to the chair frame or wrap around the seat/back to keep the cushion in place.
Care varies by style and material. Many cushions recommend spot cleaning or wiping with a damp cloth; some outdoor or segmented cushions advise cleaning with soap and water. Always follow the specific care label for the cushion you purchase.
Cushions are sold either singly or in sets. Common set sizes include 2, 4, or 6 pieces; examples include two‑piece hinged seat‑and‑back cushions and sets of four seat cushions, depending on the listing.