Why it works
Four things a flat chair can't do for you.
Tailbone cut-out
The U-shaped gap at the back means your tailbone never touches the chair.
Weight spread wide
Your load moves onto your thighs and hips instead of one sore point.
Foam that holds
High-density memory foam. The same in month six as on day one.
Non-slip base
Stays put on a desk chair, a car seat or a hard dining chair.
You sit upright without thinking about it
The sloped front edge tips your hips slightly forward, so your back settles into position on its own.
No reminders, no posture app, no willpower. Put it on your chair and sit down. That’s the whole routine.
Nothing pressing on your tailbone
The U-shaped cut-out at the back leaves a gap where your tailbone sits. Your weight spreads across the foam either side of it instead of resting on one bone.
That’s the part most people feel first, usually somewhere around the third hour.
It goes wherever you sit
Office chair on Monday, car seat on Friday, a hard dining chair over the weekend. The non-slip base keeps it where you put it.
High-density memory foam, so it’s still doing its job at 5pm rather than sitting flat under you.
It fits a normal chair
45cm x 35cm x 7cm. Wide enough to sit on properly, not so wide it hangs off the sides or fouls the armrests.
Seven centimetres of foam is enough to lift you without leaving you perched too high for your desk.
SitRight vs a cheap foam cushion
Both look similar in a photo. They don't feel similar by 3pm.
| EverComfort SitRight | Cheap foam cushion | |
|---|---|---|
| Tailbone cut-out | Yes, U-shaped | Usually flat |
| Foam | High-density memory foam | Soft filling that flattens |
| Non-slip base | Yes | Slides on the seat |
| Delivery | 5–9 days from Australia | Often 3–6 weeks overseas |
| Returns | 30 days, full refund | Post it back overseas |