Wellsin Outdoor Chair Cushions for Patio Furniture, Trellis Red Set of 4 — 18.5"x16"x3" Water-Resistant, High-Density Foam

Wellsin Trellis Red outdoor chair cushions are a set of four water-resistant, UV-resistant, high-density foam seat pads sized 18.5" x 16" x 3" designed to add comfort and color to patio or indoor chairs.

These cushions combine a full-piece 3-inch high-rebound foam core with a durable polyester cover in a trellis red pattern, offering supportive seating that resists fading and moisture. They fasten to chairs with dual side straps to minimize slipping and are sized to fit many common patio and dining chairs. Maintenance is simple — wipe clean and air dry — making them a practical upgrade for outdoor seating areas, balconies, gardens, or even kitchen chairs.

How do these cushions improve outdoor seating comfort?

The cushions use a single-piece 3" thick high-density sponge that provides consistent support while relieving pressure points on hips and lower back. The resilient foam rebounds quickly to retain shape after frequent use. This is a straightforward way to convert hard seating into more comfortable living space without replacing furniture.

• 3-inch high-density foam for supportive cushioning
• Full-piece core reduces lumps and sagging
• Designed to relieve pressure on hips and tailbone

Will these stand up to outdoor weather and sun exposure?

The polyester shell is formulated to be UV-resistant, fade-resistant, and water-resistant, which helps extend the cushion’s appearance and functionality when used outside. Light rain and splashes bead on the surface for easy cleanup, though prolonged exposure to heavy rain is best avoided. Routine wiping and airing will help preserve the fabric and foam over time.

• UV-resistant polyester helps prevent color fading
• Water-resistant finish repels light moisture
• Wipe-clean fabric simplifies maintenance

How do the straps and sizing keep cushions secure on chairs?

Each cushion includes two sewn-in straps on opposite sides that tie or loop around chair backs to keep the cushion from sliding. The 18.5"W x 16"D x 3"H dimensions fit many square or slightly rounded chair seats commonly used on patios and dining sets. Measuring your chairs before purchasing ensures the best fit and prevents overhang or bunching.

• Two attached side straps reduce shifting during use
• Standard 18.5" x 16" seat size fits most chairs
• 3" thickness keeps seat elevation comfortable without overwhelming chair proportions

How do I care for and clean these patio chair cushions?

Cleaning is low-effort: wipe spills with a damp cloth and let cushions air dry fully before returning them to chairs. For stubborn dirt, a mild soap solution can be used on the polyester cover; avoid machine washing to protect the foam core. Store cushions in a dry spot or under cover during heavy storms or winter months to extend life.

• Spot clean with damp cloth and mild soap as needed
• Air dry thoroughly to prevent mildew
• Store indoors in prolonged wet or cold weather

Who is this for? These Wellsin Trellis Red outdoor chair cushions are ideal for homeowners or renters who want an easy, affordable way to add comfort and visual interest to patio, balcony, or indoor chairs without replacing furniture. They suit people who value simple upkeep, moderate weather resistance, and a supportive foam core for everyday outdoor dining or casual seating. If your chairs measure approximately 18.5" x 16" and you want a pop of color plus slip-resistant straps, this four-pack provides a ready solution.