Summsun Outdoor Chair Cushions Set of 4 — Navy Blue D-Shaped 18.5×16×2in, Waterproof Non‑Slip

Summsun's set of four navy outdoor chair cushions are 18.5 x 16 x 2 inches D-shaped, waterproof, fade-resistant seat pads with removable covers and non-slip ties for secure, comfortable patio seating.

These cushions are engineered to restore comfort to outdoor chairs without sacrificing durability. Each pad uses a water-resistant oxford polyester cover, an inner breathable liner, and 28D high-density foam to balance support and resilience. The D-shaped profile fits a wide range of chair styles — from bistro and wicker seating to barrel and porch chairs — while two tie straps and a non-slip design keep cushions stable during use.

Will these cushions fit my outdoor chairs?

The D-shaped 18.5 x 16 inch size with a 2-inch thickness is intended to suit most standard patio seats and rounded-front chairs. Because styles vary, measuring your chair’s seat area before ordering is recommended to confirm a snug fit.

• Dimensions: 18.5 x 16 x 2 inches (D-shaped)
• Best for: garden chairs, porch seats, barrel chairs, wicker furniture, bistro sets
• Tip: Measure seat depth and width for the best match

How do these cushions handle weather and sun exposure?

The outer cover is made from water-resistant oxford polyester and includes fade-resistant treatment to maintain color outdoors. The breathable inner liner helps prevent trapped moisture, and the fabric repels light rain and splashes, keeping the foam drier and more durable over time.

• Water-resistant cover sheds light moisture
• Anti-fade finish preserves navy color under sun exposure
• Breathable liner reduces moisture buildup inside the cushion

How comfortable and durable are the cushions for regular use?

Inside each cushion is 28D high-density foam that provides firm support and quick rebound, so the seat holds its shape through repeated use. The foam helps reduce pressure on hips and lower back while the resilient construction extends the cushion’s usable life.

• 28D high-density sponge for firm, supportive seating
• High-rebound foam keeps shape after sitting
• Two ties secure cushions to chairs and prevent slipping

What maintenance is required and does the cover clean easily?

Summsun designed the cushion covers to be removable and machine-washable for low-effort upkeep. Cushions ship compressed and need 1–3 days to fully expand; gentle fluffing speeds recovery. Use mild detergent and air dry covers to preserve fabric treatment.

• Removable zippered covers — machine washable
• Compressed for shipping; allow 1–3 days for expansion
• Clean with mild detergent; air dry recommended

Who is this for: Homeowners and renters who want an affordable, durable upgrade for outdoor seating — ideal for those with patio bistro sets, wicker sofas, porch swings, or garden chairs who need a waterproof, fade-resistant cushion that stays put. If you want a simple way to add color, comfort, and weather-ready performance to multiple seats at once, this set of four navy Summsun cushions is a practical choice.