SAMTY Outdoor Chair Cushions 18x18 Inch Set of 2 — Gray Waterproof, Non-Slip, Removable Zippered Covers

SAMTY 18x18-inch outdoor chair cushions are waterproof, UV-fade resistant seat pads with a non-slip bottom and removable zippered covers for easy cleaning and comfortable support.

These square replacement seat cushions (18 x 18 x 3 inches) are made for outdoor living: solution-dyed fabric resists sunlight fading, a waterproof inner coating protects the foam, and a textured non-slip base keeps the cushion in place on patio chairs, swings, and dining seats. The covers unzip for machine washing, while the high-density foam core offers resilient support that returns to shape after repeated use. This combination is intended to extend cushion life while keeping maintenance low.

How well do these cushions stand up to sun and rain?

The SAMTY cushions use solution-dyed fabric that embeds color into fibers for long-lasting UV resistance, plus an inner waterproof coating that helps keep the foam dry. They are designed for seasonal outdoor use and to reduce color loss from prolonged sunlight exposure.

• Solution-dyed fabric rated for extended lightfastness
• Waterproof-coated inner cover blocks moisture from the foam
• Zippered cover allows quick drying after cleaning

Will they stay in place on my patio chairs and swings?

Yes — the bottom includes a professional non-slip surface to minimize shifting, and the square 18x18 size fits most standard outdoor chairs and swing seats. For extra security, the snug fit combined with the cushion’s weight and texture reduces sliding during normal use.

• Non-slip textured base prevents lateral movement
• Standard 18×18 inches fits common patio and dining chairs
• Thick 3-inch foam adds stability and comfortable seating

How do I clean and maintain these cushions?

The outer cover unzips for machine washing, making spills and seasonal refreshes straightforward. Because the inner layer is waterproof, the foam is better protected, but avoid prolonged submersion of the foam and allow the cover to fully air-dry before reassembling.

• Zippered removable cover for machine washing
• Wipe-clean waterproof inner coating protects foam during light spills
• Air-dry covers fully before putting them back on the foam

How comfortable and durable is the foam support?

The cushions contain 3-inch high-density foam engineered for resilience: it cushions while offering recovery so the pad keeps shape after frequent sitting. This provides a firm but comfortable feel suitable for dining, relaxing, or extra seating on patios and indoor spaces.

• 3-inch thick high-resilience foam for long-lasting support
• Designed to retain shape after repeated compression
• Comfortable for dining chairs, swings, and small sofas

Who this is for: homeowners and renters who want low-maintenance, long-lasting outdoor seat cushions that resist sun fading and light moisture, yet are easy to clean. Ideal for patio dining sets, porch swings, balcony seating, and indoor/outdoor transition spaces where a durable, non-slip square cushion is needed. If you need replacement seat pads that balance weather resistance, comfortable support, and straightforward care, these SAMTY 18x18 cushions are built to fit those requirements.