RUIKASI Superking Deep Fitted Sheet (Extra Deep Pocket) in White microfibre
Product description
If you’ve ever had a fitted sheet that pops off at the corners, this RUIKASI superking deep fitted sheet is aimed at that very problem. The extra-deep sided pocket and all-round elastic band are designed to grip a deeper mattress more confidently, while the fabric is kept in a soft, skin-friendly brushed microfiber feel.
That said, it’s not the only way to cover a super king bed with depth, and it may not suit you if your priorities are things like heavier-duty bedding or a specific weave you already know you love.
What it is and what it’s for
This is a super king fitted sheet with an extra deep pocket, made to sit over a deep mattress and stay in place. The “deep fit” focus is the headline here: the pocket is built to add more depth so the sheet is less likely to slip off as you move around.
In day-to-day use, it’s the sort of sheet you’d reach for when you want bedding that goes on neatly and doesn’t require constant readjusting. Think: making the bed in the morning, coming back at night, and finding the corners still where you left them.

Where it stands out (and why that matters)
The combination of a deep pocket and all-around elastic is the practical strength. Over time, fitted sheets usually fail in one of two ways: either the edges loosen, or the fabric doesn’t quite have enough drop for the mattress depth. Here, the extra deep sided pocket is directly intended to reduce slipping, and the elastic is there to help the fit stay snug.
There’s also the fabric side. On paper, the sheet is made from 90gsm brushed microfiber, which is described as soft and gentle on skin. It’s also marketed as moisture-wicking, so you can expect it to help keep you feeling drier through the night. If you’re the type of sleeper who runs warm at times (especially in warmer months), that “moisture-wicking” angle is worth considering.


The fabric and comfort feel
The material is 90gsm brushed microfiber. Brushed microfibres tend to feel smooth and comfortable rather than crisp, and the “gentle on skin” wording suggests it’s designed for everyday comfort.

The moisture-wicking claim is also relevant to comfort, but it’s worth keeping expectations realistic: moisture-wicking can’t replace good ventilation or a suitable mattress protector. Still, as part of a normal bedding setup, it can make a difference if you notice sweat or dampness during the night.
Practical care: keeping it looking neat
Maintenance is described as straightforward: a quick cold-water wash and tumble dry on low heat. That’s the kind of routine that fits real life rather than demanding specialist washing steps.
A quick note: because it’s white, you’ll generally want to follow the wash guidance carefully if you want it to stay looking bright, especially if the sheet gets used regularly.
What to check before you buy

This product is very specifically aimed at super king beds with extra depth. Before committing, make sure you’re confident about the fit requirements you have.


- Confirm your mattress is within the depth that “extra deep” is meant to cover (the listing mentions a 40cm / 16 inches extra deep sided pocket, but mattress depth and pocket depth are not always identical in practice).
- Check whether a fitted sheet with strong corner grip is what you need, or whether you’d prefer a different setup if your mattress is unusual in shape.
- If you’re sensitive to microfiber textures, it may be worth comparing how brushed microfiber feels versus other fabrics you’ve used before.
Pros
- Extra deep sided pocket aimed at reducing slipping on deep super king mattresses
- All-around elastic band for a snug, stay-put fit
- Soft brushed microfiber with a moisture-wicking promise
- Simple care routine (cold wash, tumble dry on low)
Cons / things to be aware of

- If your main requirement is premium bedding feel (rather than practical grip and everyday comfort), microfiber may feel more “managed” than “luxury” to you
- White sheets are easier to spot staining on, so they demand a bit of care in washing habits
- “Moisture-wicking” helps, but it’s not a full solution if you’re dealing with heavy heat retention or a very warm room setup
When it makes sense
It’s a solid choice if you want a super king fitted sheet designed for extra mattress depth, and you’re tired of sheets that loosen at the corners. It suits regular, everyday use—especially if you like bedding that goes on neatly and doesn’t need constant fixing.
You might want to skip it if you’re very particular about fabric type and already know you prefer a different material feel. And if your mattress depth doesn’t match what the “extra deep” pocket is intended for, the fit advantage could be less noticeable.


Mini FAQ

Is it designed for deep mattresses?
Yes, it’s built with an extra deep sided pocket and all-around elastic intended to help it stay fitted on deeper super king beds.
What material is the fitted sheet made from?
It’s made from 90gsm brushed microfiber.
Does it help with night-time moisture?

The listing states it’s moisture-wicking to help keep you dry all night.
How do you wash it?
It’s described as suitable for a quick cold-water wash and tumble dry on low heat.
Final verdict
This RUIKASI superking deep fitted sheet looks like a practical, everyday option for anyone with a deeper mattress who needs the corners to stay put. The extra-deep pocket and elastic fit are the big selling points, and the brushed microfiber is positioned for softness and comfort with moisture-wicking support. It may not be the best match if you’re chasing a premium fabric feel or if your mattress depth sits outside what the “extra deep” design is meant to cover.
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