CushZone Large Memory Foam Seat Cushion, Blue, with U-Shaped Coccyx Cutout

For people who spend long stretches sitting at a desk, behind the wheel, or in a wheelchair, the CushZone seat cushion adds shaped memory foam support to an existing seat.

Its U-shaped opening leaves space for the tailbone, while the contoured surface is designed to support a more upright sitting position. The blue cover is removable and machine washable.

The large cushion measures 18" x 14.2" x 3.15" and has a carry handle, so it can move between a desk chair and a car seat. Buyer feedback is generally favorable about comfort and portability, but opinions differ on firmness, how well it holds its shape, and whether its size suits their needs.

Tech summary

• Name: CushZone Memory Foam Seat Cushion
• Type: Seat cushion
• Size: Large
• Dimensions: 18" x 14.2" x 3.15"
• Material: High-density memory foam, 100% polyester mesh cover
• Color: Blue
• Features: U-shaped coccyx cutout, contoured design, non-slip base, carry handle, removable cover

How to use it

Place the cushion on the seat with the U-shaped cutout facing the back. This positions the open area beneath the tailbone, as intended, and allows the contoured surface to support the seated position. It is described for use in an office, car, wheelchair, or during travel, so it can be a practical choice for someone who switches between seats rather than buying separate cushions for each setting.

The non-slip base is intended to help keep the cushion in place, while the handle makes it easier to carry. The cover unzips for removal and is machine washable. Those features may matter most for regular use across a workday or commute, when easy repositioning and routine cleaning are useful considerations.

Tips for day-to-day use

Memory foam may feel firm at first, especially after compression during shipping or in cooler conditions. The product information says body heat helps it soften and adapt with use. That is worth keeping in mind when judging its feel immediately after unpacking, buyer impressions of firmness are mixed, with some describing it as supportive and others finding it too hard.

Customer feedback also points to a trade-off to consider: people often value the cushioning and ease of carrying it between a car and desk chair, while reports differ on whether it keeps its shape under use. Opinions on size vary as well. Since this is a large cushion, its stated dimensions are a useful reference when considering the space available on your seat.

Questions before you buy

What is the cutout for? The U-shaped opening is designed to leave space around the tailbone and reduce pressure in that area during prolonged sitting. It is intended to support comfort, not to guarantee pain relief.

How should it be positioned? Set it on the seat with the cutout facing the back, so the opening sits beneath the tailbone area.

Will it feel soft right away? Not necessarily. The product information notes that memory foam can feel firm at first, particularly after compression or in cool conditions, and may soften with body heat. Buyer feedback on firmness is mixed.

When it makes sense

You’ll appreciate it if you want a portable cushion with a tailbone cutout for long periods at a desk, in a car, or in a wheelchair. Compared with a basic flat seat pad, this design adds a contoured shape and a non-slip base, a simpler pad may suit someone who does not need those features. You may want to skip it if you prefer a smaller cushion, since this one is listed as large and some buyers find its size more than they need. The different reports on firmness and shape retention also mean personal comfort may vary depending on how you use it.