Two common constructions appear: foam-core cushions (often described as high-density or 28D foam) with olefin covers, and bench-style pads filled with cotton or high-resilience hollow cotton with polyester or cotton surfaces.
Common closure and attachment options include tie straps or attached ties, cinch-cord closures, sewn seams, and zippered/removable covers (depending on the cushion style).
Many cushions are described as water-resistant or waterproof and offer sun/fade resistance; olefin covers are specifically noted as sun-protective and fade-resistant. Some listings also caution that certain cushions are not recommended to be left out in rain.
Many cushions ship vacuum-packed. Recovery times in the listings vary: some expand within a few hours (about 2 hours), while others may take 3–7 days to fully regain shape. A few listings mention using a short tumble-dry (about 15 minutes) to speed recovery.
Listings show tie straps or attached ties, multiple corner ties, and non-slip designs as the primary features used to secure cushions and reduce sliding on benches and chairs.
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