Search  for anything...
Sweetnight

Sweetnight 4 Inch King Mattress Topper, High Density Memory Foam Mattress Topper for Enhanced Support, Medium Firm Mattress Topper with Non-Slip Design, King Size

    • Based on 374 reviews
Condition: New
Checking for product changes
$213.35 Why this price?

Buy Now, Pay Later

As low as $35.56 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 19 left in stock
Fulfilled by Amazon
Arrives Wednesday, Dec 4
Order within 4 hours and 48 minutes
Available payment plans shown during checkout

Color: White 4 Inch


Size: King


Features

  • Polyester
  • [JUST-RIGHT SUPPORT] - A mattress that is too soft or too firm may lead to an uncomfortable sleep. Your medium-firm mattress topper, which is made of high density gel-infused memory foam, cradles your body and properly align your spine to reduce sinkage.
  • [DOUBLE ANTI-SLIP & NOT EASY TO MOVE] - The mesh fabric backing increases friction and holds your king mattress topper in place. Additionally, the adjustable elastic straps help to keep the topper securely on the mattress so that it will not keep moving when twisting or turning over at night.
  • [EXTEND MATTRESS LIFE] - Your foam mattress topper not only provides a perfect balance between body support and softness, but also slows down the wear on your mattress, protects it from dust and dirt, and prolongs its service life.
  • [SOFT TOUCH & AIRFOW] - Made of skin-friendly fabric, the knitted cover of your memory foam mattress topper king provides softer touch and more luxurious sleep experience. Another bonus is that the mesh backing allows airflow and absorbs heat from your body.
  • [WORRY-FREE WARRANTY] - All Sweetnight foam mattress toppers are backed with a hassle-free 5-year warranty, offering a 30-night trial. If you have any problems or questions with your mattress topper, were here to help you out.

Description

DIMENSIONS OF YOUR MATTRESS TOPPER: Twin: 39" x 75" Twin XL: 39" x 80" Full: 54" x 75" Queen: 60" x 80" King: 76" x 80" Cal King: 72" x 84" TIPS YOUR MAY NEED: -Please put it in a ventilated area to fully expand within 48-72 hours. A slight smell is normal and will fade away in a few hours. Please don’t worry. -Different mattress toppers feature different firmness. Let your sleeping preferences and needs guide you. It may take you some days to break in a new mattress topper. Please give it a try. -If your mattress is heavily sagging or damaged, it may be best to replace it. A king memory foam mattress topper is not for replacing a heavily damaged mattress.

Brand: Sweetnight


Color: White 4 Inch


Size: King


Fabric Type: Polyester


Special Feature: Adjustable


Brand: Sweetnight


Color: White 4 Inch


Size: King


Fabric Type: Polyester


Special Feature: Adjustable


Closure Type: Pull On


Water Resistance Level: Not Water Resistant


Age Range (Description): Adult


Material: Memory Foam


Model Name: N-M03501-New


Manufacturer: Sweetnight


Global Trade Identification Number: 18


Item Weight: 44 pounds


Country of Origin: China


Item model number: SN-M03501-4-K


Refill: foam, memory-foam, down, gel


Assembly required: No


Batteries required: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Better than expected
I've had a super firm Sleep Innovations memory foam mattress topper for 10yrs. It finally have up. If the room is even slightly warmer than 65°, the topper become mush. Since the exact replacement is not currently available, I took a chance and ordered this one knowing it didn't have the same density rating. When I unpacked it, I could tell immediately it was much softer than I wanted. However, after 48 hours, it has plumped up and firmed up nicely. I've slept well on it. It's still not as firm as I really wanted, but it's firm enough that I'm happy with it. To add context, my former topper felt like a rock to the touch and then molded itself to my body as it warmed up. The difference is in the foam density. My former was a high density foam. This is clearly a medium density foam, but quite comfortable. If you are exceptionally heavy or have specific back issues, you likely want a high density foam. However, if availability or cost are a factor, you can make do with this one for some time. Meanwhile, if you're not very heavy, this one should serve your needs quite well and for long time. The topper comes with a removable, washable cover, and straps to hold it in place. Do plan on giving it the full 48 hours to decompress. 3 month update: I love this topper. I slept on it after 48 hours thinking it was fully expanded. I was wrong. It was much firmer after 72 hours. It's so much better than I expected. I'm sleeping well and awakening each morning refreshed and pain free. I haven't had to take ibuprofen for two months! Really happy with this purchase! ... show more
Reviewed in the United States on November 28, 2022 by Happy Client
    • I can't believe this topper is what it says it actually is!
Color: White 4 Inch Size: Queen-New
Review Image by Jessica Jessica
Review Image by Jessica Jessica
Review Image by Jessica Jessica
Review Image by Jessica Jessica
Review Image by Jessica Jessica
I have been looking for a mattress topper that would fit my needs for awhile now. There are many toppers that say they will inflate to the full height they claim, this is just the first on that actually did. This topper is so comfortable and supportive. Here is the deal. It was only a few months ago when I purchased a mattress online that was within the $300 range. Now I have purchased "memory foam" mattresses in the past within that price range and they did hold up for a few years. However with my most recent mattress, after a month it was no longer supporting me the way I needed. I tried a few ways to fix my mattress issue and eventually just tore the top part of it off so it would support. (Ultimately just buying a quality mattress right now would be ideal, but I am not going to spend the $1,400 to make that happen right now). Once I "fixed" my mattress situation, it was sleeping a little too firm, hence my hunt for a quality mattress topper. In the past I had a Tempurpedic mattress, so I was hoping to find a topper that would be equivalent. And...I found it. I let the mattress breath for 24 hours before I put it on my bed, it fully inflated and it fit my queen mattress perfectly. The first night on it, I slept so well. I actually had energy when I woke up, which speaks well for a comfortable sleep. If you are looking for a quality mattress topper for a median price, this is the one you want. I would say it's firmness is a "semi-firm" feel with just the right give if you are a side sleeper. ... show more
Reviewed in the United States on January 7, 2024 by Jessica Jessica
    • Great mattress pad
Color: White 4 Inch Size: Full-New
Sleeping better and waking up with no pain
Reviewed in the United States on February 4, 2024 by Baby Rose
    • Recommend!!
Color: White 4 Inch Size: Queen-New
Review Image by Shawna Shawna
Review Image by Shawna Shawna
Review Image by Shawna Shawna
I was a little bit hesitant because I’ve seen so many reviews, but they were free product reviews. I didn’t go ahead and buy the bullet because it said free returns and there was also a review about the customer service being good. I did try to reach out to the customer service and no one answered. I was within their open hours. I did receive it call back/ voicemail from them the next day just checking in but I don’t currently need to call back. The mattress topper is comfortable. Our bed was very hard and we needed something that would help us to get to sleep and want to stay in the bed a little bit longer in the mornings. Our mattress by herself is a mattress to sleep on but not to linger on in the morning so I’m very happy that we did make this purchase. It’s very good for the price point and a great addition to any mattress, I highly recommend ... show more
Reviewed in the United States on March 15, 2024 by Shawna Shawna
    • Support well
Color: White 4 Inch Size: King-New
Review Image by Tera Tera
I bought a new mattress and it's not very comfortable. So at the suggestion of a friend, I added a layer of mattress topper on top of the mattress. After comparing prices and materials, I chose this topper. Shipping was fast. It will take at least 48 hours for the topper to expand after opening the package. After using it for a few days, I feel that this topper is very supportive and has no odor. It is very comfortable to lie on, much better than the previous mattress alone. My sleep quality has improved after using it. Like it. ... show more
Reviewed in the United States on March 19, 2024 by Tera Tera
    • Amazing!!!
Color: White 4 Inch Size: California King-New
So I had this on my wishlist for at least 6 months. There aren’t many California King mattress toppers and even fewer with more than 4 stars. Needless to say I’ve been really skeptical. I wasn’t sure anything was going to be worth the price tag, not smelly, actually 4 inches, etc. But this was definitely worth the buy. I LOVE IT!! I’s the best money I ever spent lol. I let it air out for 8 hours, measured it and it was fully formed. If you don’t want to be worried about returning something that might not work, get this mattress topper. It was in great shape, no damage and feels amazing!!! ... show more
Reviewed in the United States on February 26, 2024 by TiaraFit__

Can't find a product?

Find it on Amazon first, then paste the link below.