Niceeday Adjustable Memory Foam Coccyx Seat Cushion, 5.9-Inch Maximum Height

Inch Maximum: The Niceeday adjustable seat cushion is a thick memory-foam cushion with a coccyx cutout and removable lower layer for changing its seating height. Its substantial profile may suit firm office or home chairs, but the listing advises checking chair dimensions and notes that it may be bulky on small or soft seats.

At a glance

A U-shaped center cutout leaves space around the tailbone, while the contoured sides support the hips and thighs.
The lower layer is removable to create a lower seating profile. The listing gives approximately 4 inches without it and approximately 5.9 inches at full height.
The listing describes grip points underneath and a removable, machine-washable mesh cover.

Price

$25.97Save 28%

Reference price: ~~$35.99~~

Price checked: Nov 14, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Niceeday Lumbar Support Pillow for Office Chair Car Back Support Pillow, Memory Foam Gaming Chair Desk Chair Back Cushion for Lower Back Pain Relief, Ergonomic Back Rest,Office Home Essentials

$26.99

Pros and cons

Pros

Height can be adjusted by removing the lower layer rather than replacing the cushion.
The coccyx cutout and contoured shape are designed to reduce direct tailbone pressure while seated.
Anti-slip grip points and a removable cover are listed practical features for chair use and cleaning.

Cons

The full-height cushion can noticeably raise sitting height and may not suit small chairs or confined car seats.
Its tall, substantial shape may be a poor fit for deep or soft seating, according to the listing.

Technical specifications

14 specifications

Identity
Brand	Niceeday
Size	Large Seat Cushion
Color	Dark Gray
Pieces	1

Materials and construction
Fill material	Memory Foam
Cover fabric	100% Polyester
Firmness listed	Medium
Features listed	Adjustable, Anti-Slip, Foldable, Hip support, Removable Cover
Pattern	Solid

Dimensions and installation
Dimensions	17.72"L x 15.7"W x 5.9"H
Form factor	Coccyx Cutout
Weight listed	1.9 pounds

Use
Recommended uses	Driving, Sitting
Target body part	Buttocks

What to know before buying

The listing gives the full height as 5.9 inches and says removing the lower layer reduces height to approximately 4 inches. It also describes the cushion as 4.7–5.9 inches in the title, so the lower-height description is not fully consistent. Check the selected listing and your chair's available seat height before purchase. The listing says it is best suited to firm, relatively flat seats and may feel bulky on small chairs, confined car seats, or deep, soft seating.

Who is it for?

A good fit for

People seeking an adjustable-height cushion for a firm, relatively flat office or home chair.
Buyers who want a removable cover and a shaped seat with space around the tailbone.

Less suited to

People who need a low-profile cushion or have limited clearance beneath a desk or chair.
Those shopping for a compact cushion for a confined car seat or deep, soft seating.

Niceeday Adjustable Memory Foam Coccyx Seat Cushion, 5.9-Inch Maximum Height · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 52 ratings

5 stars66%66%
4 stars13%13%
3 stars9%9%
2 stars0%0%
1 star12%12%

Customer feedback reports that the cushion works well in office chairs and that some customers appreciate its softness. Comfort and quality feedback is mixed, including reports of both comfortable and painful experiences. That matters for a thick cushion with a shaped cutout, since fit and feel may vary by chair and person. Overall ratings lean positive, but the reported concerns mean they should not be treated as a guarantee of comfort.

Positive themes

Customers report that it works well in office chairs.
Some customers appreciate its softness.

Mixed feedback

Comfort feedback ranges from comfortable to painful.
Quality feedback is mixed.

Frequently asked questions

How tall is the cushion?

The listing states 5.9 inches at full height and approximately 4 inches when the lower layer is removed. The title also gives a 4.7–5.9-inch range, so confirm the selected listing's sizing details.

Can the cushion fit in a car?

Driving is listed as a recommended use, but the listing cautions that the cushion may be too bulky for confined car seats. Check the seat dimensions and available height first.

Can the cover be washed?

The listing describes the cover as removable and machine-washable.

What kind of seat is it intended for?

The listing says it is best suited to firm, relatively flat seats and may feel bulky on small chairs or deep, soft seating.