Rounded Back Seat Cushion 19.5x20x5 in Sunbrella Navy - Durable

In this review of the Rounded Back Seat Cushion from Cushion Source we focus on who will benefit most and why the cushion stands out. The bottom line: this cushion is for anyone wanting a deep, weather-ready seat pad that keeps its color and shape outdoors while offering a plush 5 in profile for true lounging comfort. It feels substantial without collapsing, and the Sunbrella performance fabric and hidden zipper show the kind of practical detail a regular patio user will appreciate.

Key Features

• Sunbrella performance fabric: Resists fading and holds up to sun and moisture so the cushion remains vibrant on patios or in sunrooms.
• 5 in CumuPlus fill: Provides deep seating comfort with long-lasting support that suits rockers, deep chairs, and lounge furniture.
• Rounded back design: Curved back and box edge styling give a tailored fit for chairs about 19 in-21 in wide and 20 in-22 in deep.
• Hidden zipper: A concealed closure keeps the profile clean and makes cover removal discreet for spot care or professional cleaning.
• Proudly made in the USA: Precision construction since 2004 gives reassurance on build quality and consistent dimensions.

Who It's For

The cushion is ideal for homeowners with outdoor patios, porches, or sunrooms who need a durable, colorfast seat pad that can handle seasonal weather without degrading quickly. People who prefer a firmer, supportive seat for long periods will find the 5 in CumuPlus fill especially satisfying.

Those looking for an ultra-soft, sinking cushion or a very slim profile should look elsewhere; the product leans toward medium-firm support and deep seating rather than a low-profile or cloudlike pillow. Also, buyers needing non-Sunbrella specialty textiles should consider other options.

Pros & Cons

Pros

• High quality fabric that maintains color outdoors and stands up to wear.
• Deep 5 in thickness with CumuPlus fill delivers lasting comfort and support.
• Tailored rounded back fits a range of deep seating chairs for a neat finished look.
• Hidden zipper and US manufacturing reflect thoughtful construction.

Cons

• Some users may find the cushion firmer than expected if they prefer very soft seating.
• Limited to the listed size range, so exact chair measurements are important for a proper fit.

Specifications

Our Verdict

The Cushion Source Rounded Back cushion is a smart choice for patio and sunroom seating where durability, color retention, and supportive comfort matter. It offers good value for those who need a resilient, deep seat pad with a tailored look; just confirm your chair dimensions and expect a medium-firm feel rather than a very soft sink-in cushion.

Frequently Asked Questions

Is this cushion suitable for outdoor use?
Yes. The Sunbrella performance fabric is designed to resist fading and handle outdoor exposure.

Will it fit my deep seating chair?
The rounded back fits chairs approximately 19 in-21 in wide and 20 in-22 in deep; measure your seat to ensure a good fit.

Can the cover be removed for cleaning?
Yes. The cushion uses a hidden zipper for discreet cover removal and cleaning.