Question 1

Is the cushion soft or firm? I'm worried it might be too hard.**

Accepted Answer

The ProtoArc cushion is designed for therapeutic support, so it's firmer than a typical plush pillow. Many Reddit users mention it feels "supportive" or "dense" at first. This firmness is intentional to provide pressure relief and prevent bottoming out. Most users find it becomes perfectly comfortable after a short break-in period, but if you're looking for a cloud-soft feel, this might not be the best match.

Question 2

How much height does it add to my chair, and will it be a problem?**

Accepted Answer

The cushion adds about 2 inches of height. This is a common note in reviews. If you're on the shorter side or your desk height isn't adjustable, it's something to consider. Many users solve this by lowering their office chair. For car use, it's generally less of an issue, but some TikTok users have noted it can affect visibility for very short drivers.

Question 3

Will it slide around on a leather office chair or car seat?**

Accepted Answer

The bottom has a non-slip silicone dot pattern that works well on most fabrics. However, on very smooth leather surfaces, some slippage can occur, especially when entering/exiting a car seat. For best results on leather, ensure the seat surface is clean and dry. A few YouTube reviewers suggest placing a non-slip shelf liner underneath for absolute security.

Question 4

I have sciatica/tailbone pain. Is this cushion genuinely helpful for all-day use?**

Accepted Answer

Yes, this is the most praised benefit across customer reviews and social media. The ergonomic U-shaped cutout and high-density memory foam are specifically designed to offload pressure from the tailbone (coccyx) and hips. Many users with desk jobs or who drive for long periods report significant, lasting relief, calling it a "game-changer" for all-day comfort.

Question 5

How do I clean it, and how long will the memory foam last before sagging?**

Accepted Answer

The zippered top cover is removable and machine washable (cold, gentle cycle, air dry). The foam core should only be spot-cleaned. Regarding durability, feedback indicates the foam is resilient. Users consistently report it maintains its shape and support for many months of daily use without flattening, which is a key reason for its high value rating.

ProtoArc Seat Cushion, Office Chair Cushion for Sciatica, Coccyx Cushion, Ergonomic Memory Foam Seat Cushion for Car, Home, Pressure Relief Pad for Hip, Tailbone, All Day Comfort - Black

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