Waterproof Patio Cushion Covers 20x18x4 in 4 Pack Black
Waterproof Patio Cushion Covers 20x18x4 in 4 Pack Black
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In this review the reviewer looks at the Easy-Going waterproof patio cushion covers in the 20x18x4 in 4 pack, a practical replacement cover set for outdoor seating. The bottom line: these covers are for anyone who wants to protect existing seat cushions from spills, sun fade and frequent use without replacing the foam inserts. The single biggest reason to buy is the durable, waterproof oxford construction combined with a non-slip backing and long zipper that makes installation and cleaning straightforward.
Key Features
- Dimensions: Four covers sized 20x18x4 in fit common outdoor seat cushions and simplify buying the right size.
- Waterproof material: Thick oxford fabric repels spills and shields cushions from light moisture to extend their usable life.
- Non-slip backing: A textured back helps covers stay put on fabric or wood furniture so cushions require fewer adjustments.
- Sun fastness: Yarn-dyed fabric resists UV fading for over 500 fade-proof hours, keeping color truer in sunlight.
- Easy access zipper: A long zipper lets you install or remove each cover quickly for machine washing and routine care.
- Cover only: These are slipcovers only and do not include cushion inserts, so customers must reuse or buy cushions separately.
Who It's For
These covers are well suited to homeowners or renters with existing 20x18x4 in seat cushions who want an affordable way to refresh or protect outdoor furniture. They work for patio chairs, benches, or dining seating where water resistance and reduced fading are priorities.
They are not intended for buyers who need new cushions or thicker foam inserts, and customers seeking fully waterproof protection in a heavy downpour should look for seam-sealed designs, since water may enter at the zipper and seams in sustained rain.
Pros & Cons
Pros
- Waterproof oxford fabric gives solid protection against spills and light moisture.
- Non-slip backing reduces shifting and keeps cushions looking neat during use.
- Long zipper makes installation and machine washing quick and easy.
- Good color retention with UV resistant yarn-dyed fabric for outdoor exposure.
Cons
- Covers are sold without cushion inserts, so buyers must ensure existing cushions match the 20x18x4 in size.
- While water resistant, seams and the zipper can allow water entry in heavy rain.
Specifications
| Pack count | 4 covers |
| Size | 20x18x4 in |
| Material | Thick waterproof oxford fabric |
| Closure | Long zipper for easy on/off |
| Back finish | Non-slip fabric |
| Sun resistance | Yarn-dyed, 500+ fade-proof hours |
| Included | Cover only, no cushion inserts |
Our Verdict
These 20x18x4 in cushion covers are a practical, cost-effective way to protect and refresh outdoor seating for those with existing cushions. They deliver reliable spill resistance, reduced fading and a stay-put backing, but buyers should measure cushions carefully and understand that heavy rain can get in at seams and zippers. For straightforward protection and improved appearance, they represent good value.
Frequently Asked Questions
Do these covers include cushions?
No. This listing is for covers only and does not include any cushion inserts.
Can I leave them outside in the rain?
They are water resistant but not fully seam-sealed; prolonged exposure to heavy rain may allow water to enter at the zipper and seams.
Are they machine washable?
Yes, the covers are machine washable; do not iron.
Editor's Take
These 20x18x4 in cushion covers are an affordable way to protect and refresh outdoor cushions, offering waterproof oxford fabric, non-slip backing and good UV resistance, though they do not include inserts and are not fully rainproof.

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