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King Size Mattress Topper - Extra Thick 10cm Comfort (150 x 200cm)

Transform your sleep with our Extra Thick 10cm King Size Mattress Topper (150 x 200cm). Engineered for ultimate comfort, this plush quilted topper revitalizes firm or ageing mattresses by supporting pressure points and reducing back discomfort. Perfect for UK couples and master bedrooms seeking a luxury, hotel-quality feel. Shop now for breathable, ultrasoft comfort.

£34.99

Delivery within 2-3 working days

Buy with confidence with a 1 month return policy
Free shipping in UK

Thickness: 10.0 cm

Premium Packaging

Machine Washable

Why Choose Our King Size Mattress Topper?

UK sizing accuracy (150×200cm)
Extra thick plush comfort
Breathable microfiber for UK climate
Secure fit elastic straps
Suitable for couples
Pressure relief

If your mattress feels too firm, uneven, or uncomfortable, the MightySoft King Size Mattress Topper offers an easy way to improve sleep quality without replacing your bed. Designed for standard UK king size beds (150 x 200cm), this extra thick 10cm mattress topper adds deep cushioning, pressure relief, and breathable comfort for a more restful night’s sleep.

The plush quilted filling gently supports the back, hips, shoulders, and pressure points while helping reduce discomfort caused by firm or ageing mattresses. Whether used in a master bedroom, guest room, or shared bed for couples, this king size bed topper creates a softer and more supportive sleep surface.

Made with breathable microfiber and secure elastic corner straps, the topper stays comfortably in place while helping maintain airflow throughout the night.

A couple is sitting peacefully on mattress topper

Benefits of Our Extra Thick King Size Mattress Topper

Deep Cushioning - 10cm of plush softness improves comfort
Even Support - Large king-size quilting distributes pressure uniformly
Temperature Balanced - Breathable design prevents heat buildup
Secure Fit - Elastic corner straps help keep the topper securely in place throughout the night
Hypoallergenic - Ideal for sensitive sleepers having allergy concerns
Easy Maintenance - Machine washable, durable and long-lasting
Cost-Effective Upgrade - Renew your king bed without buying a new mattress

MightySoft transforms your king mattress with a topper that adds warmth, softness, and a more restful sleep environment every night!

Why Choose a 10cm Mattress Topper?

Many mattress toppers available in the UK are only 2–5cm thick, offering limited cushioning and support. The MightySoft 10cm king size mattress topper provides deeper sleep comfort and improved pressure relief, making it a better option for sleepers looking to noticeably soften a firm mattress.

The extra thickness helps distribute body weight more evenly across the bed surface, which may reduce pressure around the hips, shoulders, and lower back. This makes it especially suitable for side sleepers, couples, and people wanting a softer hotel-style sleeping experience at home.

What Is a King Size Mattress Topper? (UK Guide)

A mattress topper is a removable layer that sits on top of your mattress to improve comfort and support. Unlike mattress protectors, which only prevent stains and dust, toppers enhance firmness, softness, and overall sleep quality.

Why choose a topper for your UK king bed?

Fits standard UK king beds: 150 × 200cm
Adds an extra 10cm of comfort
Supports spinal alignment and pressure relief
Easy to remove, wash, and maintain

Whether your mattress is too firm or slightly worn, a topper is a practical way to refresh your bed without replacing the entire mattress.

King vs Double vs Super King Mattress Topper

Choosing the right size is crucial for a perfect fit and optimal sleep. Here’s a quick comparison:

Feature	Double	King	Super King
Dimensions (UK)	137 × 190cm	150 × 200cm	180 × 200cm
Ideal For	Single sleepers, small rooms	Couples, standard bedrooms	Couples, larger rooms, master bedrooms
Thickness	10cm	10cm	10cm
Benefits	Softens mattress, easy fit	Extra cushioning, pressure relief	Maximum coverage, ultimate comfort

Tip: Always measure your bed before purchasing to ensure a perfect fit.

Product Specifications

King size mattress topper technical specifications and schematic

Feature	Details
Size	150 x 200 cm (Standard UK King)
Thickness	10 cm plush comfort layer
Material	Soft, breathable microfiber
Design	Diamond-quilted to enhance airflow
Fit	Elastic corner straps for steady positioning
Care	Machine wash at 40°C, tumble dry low
Hypoallergenic	Yes

Perfect For: UK king size beds, couples, side sleepers, guest rooms, firm mattresses, ageing mattresses, allergy-sensitive sleepers, and anyone wanting extra cushioning and pressure relief.

UK Delivery, Returns & Fit Guarantee

We understand that fast, reliable delivery is a priority.

Free UK Delivery: 2–3 working days
1-Month Return Policy: Risk-free purchase
Secure Fit: Designed for standard UK king mattresses

Enjoy a hassle-free shopping experience with MightySoft, the UK’s trusted sleep solutions brand.

FAQs

Q1. What size is a UK king mattress topper?
A standard UK king topper measures 150 × 200cm, designed to fit all standard UK king beds and sizes.

Q2. Is this topper good for back pain?
Yes. The 10cm plush layer evenly distributes weight, relieving pressure points in the spine, back, and hips.

Q3. How thick is this king size mattress topper?
The topper is 10cm thick, providing deep cushioning and a comfortable sleep surface.

Q4. Is it machine washable?
Yes. Remove the topper cover and machine wash at 40°C. Tumble dry on low for long-lasting care.

Q5. Does it fit all UK king beds?
Yes. Elastic corner straps ensure a secure fit across all standard UK king beds.

Q6. How long is UK delivery?
Delivery is free within 2–3 working days across the UK.

Q7. What material is used?
Soft, breathable microfiber provides comfort and temperature balance.

Q8. Is it hypoallergenic?
Yes. Ideal for allergy-prone sleepers, ensuring safe, comfortable nights.

Q9. Will this topper make a firm mattress softer?
Yes. The extra thick 10cm cushioning adds softness and comfort while still supporting the body evenly.

Q10. Is this suitable for side sleepers?
Yes. The plush filling helps cushion pressure points around the shoulders and hips, making it suitable for side sleepers.

Q11. Does the topper move during sleep?
No. Elastic corner straps help keep the topper securely attached to the mattress.

Q12. Can this topper help extend mattress life?
Yes. A mattress topper adds an extra comfort layer that may help reduce everyday wear on your mattress.

For more queries, reach out to our Mattress Topper FAQs!

Dos

Wash the cover at up to 40°C
Wash Mattress Topper cover with similar coloured items
Wash the cover inside out with zipper closed
Line dry and air thoroughly before use

Don'ts

Do not use bleach or harsh chemicals
Do not tumble dry or iron
Do not put the topper cover back on if it is still damp or wet
Do not dry clean

Please do not attempt to wash, sponge or dry clean the topper itself. Doing so will invalidate your product guarantee. There is a high possibility you will cause irreversible damage, destroying the benefits of comfort and support which the Mattress Topper Material provides.

Mattress Topper may be stored rolled up or laid out flat. Do not unroll a Mattress Topper when it is cold as there is a risk of the material tearing or cracking. Allow the topper to adjust or warm up to room temperature first before unrolling.

For more hints, tips and general information on looking after your product, please see our Product Care Information page.