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Comfort Insert

Name: The SONU Comfort Insert
Brand: SONU Sleep
SKU: SS435
Price: 99.0 USD
Availability: InStock
Rating: 4.8 (322 reviews)

★★★★★

Free shippingMade for SONU 1-year warranty

The SONU Comfort Insert is an accessory that fills in the Comfort Channel, making the SONU Sleep System more akin to a flat mattress, but still with some give for your shoulders. This versatility can be helpful in many scenarios including couples who sleep differently from one another (e.g. a side sleeper and a back sleeper) and for those who simply prefer less space in the Comfort Channel. The Comfort Insert also functions as a backrest for sitting up in a SONU if you don't have an adjustable foundation. A single Comfort Insert fills in only one side of the Comfort Channel of Queen and King size SONUs, and the entire Channel of a Twin XL. So if you'd like to fill in the entire Channel of a Queen or King, please purchase the 2 pack.

Quantity

1 Pack

2 Pack

Buy 2 and get 20% off the second

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$99

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Save on Essentials

Bed Frame

★★★★★

[{"id":40391008747638,"title":"Full","option1":"Full","option2":null,"option3":null,"sku":"UBHUD-F","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Bed Frame - Full","public_title":"Full","options":["Full"],"price":67900,"weight":53197,"compare_at_price":null,"inventory_management":"shopify","barcode":"810009000000","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40391008780406,"title":"Queen","option1":"Queen","option2":null,"option3":null,"sku":"UBHUD-Q","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Bed Frame - Queen","public_title":"Queen","options":["Queen"],"price":69900,"weight":54699,"compare_at_price":null,"inventory_management":"shopify","barcode":"810009000000","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40391008813174,"title":"King","option1":"King","option2":null,"option3":null,"sku":"UBHUD-EK","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Bed Frame - King","public_title":"King","options":["King"],"price":72900,"weight":55801,"compare_at_price":null,"inventory_management":"shopify","barcode":"810009000000","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40391008845942,"title":"Cali King","option1":"Cali King","option2":null,"option3":null,"sku":"UBHUD-CK","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Bed Frame - Cali King","public_title":"Cali King","options":["Cali King"],"price":72900,"weight":56899,"compare_at_price":null,"inventory_management":"shopify","barcode":"810009000000","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]
$679 $611 10% Off

Base

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$319 $287 10% Off

Muslin Blanket

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[{"id":40562413011062,"title":"Twin \/ White","option1":"Twin","option2":"White","option3":null,"sku":"OMBTW","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Muslin Blanket - Twin \/ White","public_title":"Twin \/ White","options":["Twin","White"],"price":21900,"weight":1996,"compare_at_price":null,"inventory_management":"shopify","barcode":"4700010043733","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40562412978294,"title":"Twin \/ Ivory","option1":"Twin","option2":"Ivory","option3":null,"sku":"OMBTI","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Muslin Blanket - Twin \/ Ivory","public_title":"Twin \/ Ivory","options":["Twin","Ivory"],"price":21900,"weight":1996,"compare_at_price":null,"inventory_management":"shopify","barcode":"4700010043726","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40562412945526,"title":"Twin \/ Sage","option1":"Twin","option2":"Sage","option3":null,"sku":"OMBTS","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"The SONU Muslin Blanket - 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King \/ White","public_title":"King \/ White","options":["King","White"],"price":27900,"weight":3538,"compare_at_price":null,"inventory_management":"shopify","barcode":"4700010043771","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40562413273206,"title":"King \/ Ivory","option1":"King","option2":"Ivory","option3":null,"sku":"OMBKI","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Muslin Blanket - King \/ Ivory","public_title":"King \/ Ivory","options":["King","Ivory"],"price":27900,"weight":3538,"compare_at_price":null,"inventory_management":"shopify","barcode":"4700010043764","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40562413240438,"title":"King \/ Sage","option1":"King","option2":"Sage","option3":null,"sku":"OMBKS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Muslin Blanket - King \/ Sage","public_title":"King \/ Sage","options":["King","Sage"],"price":27900,"weight":3538,"compare_at_price":null,"inventory_management":"shopify","barcode":"4700010044044","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40562435817590,"title":"King \/ Pacific","option1":"King","option2":"Pacific","option3":null,"sku":"OMBKB","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"The SONU Muslin Blanket - King \/ Pacific","public_title":"King \/ Pacific","options":["King","Pacific"],"price":27900,"weight":3538,"compare_at_price":null,"inventory_management":"shopify","barcode":"4700010044051","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]
$219 $197 10% Off

Comforter

★★★★★

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$199 $179 10% Off

Comfort Insert

★★★★★

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$99 $89 10% Off

Free Shipping *

Made For SONU

1 Year Warranty

What's Included

EXPAND ALL

Relief nationwide.

★★★★★
Game changer
I tried many remedies but none solved my problem until I discovered the Sonu mattress with the cut out arm channels. This has become a game changer. No more shoulder pain, no more dead arms, and the most comfortable sleep I have had in years.
Christopher G.Verified ShopperFloral Park, NY

★★★★★
Finally sleeping again!
As someone with frozen shoulder in one arm and having had surgery on the other due to frozen shoulder, sleep was fleeting. I hadn't slept well for about 2 yrs until I got this mattress. It has been life changing for me!
Jessica F.Verified ShopperJohns Island, SC

★★★★★
Finally!
For 40 years I have wanted a bed with "a hole in it for my arm". Better than a hole is this design. No more pain or numbness plus it is gentler on my hip bone and better for my lower back.
Gregory O.Verified ShopperParkville, MD

★★★★★
Fantastic!
I had just about given up on thoughts of sleeping through the night ever again. I would wake up 30 to 40 times a night to adjust myself. I can't begin to explain what it feels like to sleep through an entire night.
Crystal G.Verified ShopperNew Palest., IN

★★★★★
Relief from shoulder and neck pain
I'd wake up multiple times a night because of my arm falling asleep or pressure on my hips, and then wake up with terrible neck pain. I wake much less frequently in the night, and I have no pain in the mornings!
Amy Y.Verified ShopperSparks, NV

★★★★★
Life changing
After two rotator cuff surgeries over the last 5 years I haven't been able to get a good night sleep. I was nervous about the big investment, but I'm glad I did and would recommend to anyone with shoulder problems.
Michael M.Verified ShopperTownship of Washington, NJ

More Reviews

Frequently Asked Questions

Yes! We produce an accessory called the SONU Comfort Insert that does precisely that. Install the Comfort Insert to fill in one side of the Comfort Channel on Queen and King sizes, and the entire Channel on a Twin XL. Buy the 2 pack to fill in both sides of Queens and Kings.

The SONU Comfort Insert is an accessory that fills in the Comfort Channel, essentially turning the SONU Sleep System into a normal flat mattress. This can be helpful for sitting up in bed if not using an adjustable foundation, or for couples who sleep differently from one another (a side sleeper and a back sleeper, say). A single SONU Comfort Insert fills in only one side of the Comfort Channel of Queen and King size SONUs, and the entire Channel of the Twin XL size. So if you'd like to fill in the entire Channel of a Queen or King, please purchase the 2 pack.

Yes, with the SONU Comfort Insert you can fill in half of the Comfort Channel in order to further customize the mattress to your personal needs.

SONU Comfort Inserts are sized precisely for their corresponding Comfort Channels to ensure a perfect fit.

Twin XL
29.5” x 13.5” x 9.5”

Queen
25.5” x 13.5” x 9.5”

King
33.5” x 13.5” x 9.5”

Cali King
31.5” x 13.5” x 9.5”

All dimensions above are in inches and formatted as follows: Width x Length x Height.

The Comfort Insert uses the same top quality cover with cooling Phase Change Material (PCM) fabric, and the same premium high-resilience CertiPUR-US® certified environmentally friendly foams as the SONU mattress.

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Effortless side-sleeping

The Benefits of Sleeping on a Sonu.

The Negative Space Mattress Is Born

A complete guide to the design, engineering and life-changing benefits of this newly introduced technology in the sleep industry.

Chiropractor Recommended

Discover how chiropractic physicians, like Dr. James Hogan, help relieve their patients' chronic pain and discomfort with Sonu.

Customized Comfort

Sonu's modular design allows for incredible versatility, improving the comfort of any sleeping position.

NATCA Approved

Sonu is the official mattress of the National Air Traffic Controllers Association.

Best Practices

Learn how to set up the Comfort Channel, Support Pillows and sleep position for your body.

Handcrafted sleep systems

Made In The U.S.A.

The SONU Sleep System was designed and developed in California, and is manufactured only in the United States with high-quality materials and attention to detail for side sleepers everywhere.

* SONU Bedding and several SONU Supports are imported products. All other SONU products
are made in the United States.

Designed To Work Together

The Patented SONU Sleep System Mattress with Comfort Channel against a white background.

The SONU Sleep System

Hybrid

$2,099 $1,599 ★★★★★

It is finally time to immerse into comfort, and sleep like never before.

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The SONU Sleep System's custom made cooling sheets, folded & stacked in different colors. They are white, cream and slate, from top to bottom.

The SONU Sheets

$159 ★★★★★

Soft, cooling and sustainable, with the Comfort Channel built in to fit your SONU.

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A Top Pillow made specifically for the SONU Sleep System against a white background.

The SONU Top Pillow Deluxe

$129 ★★★★★

The perfect amount of support and malleability to complement your SONU.

MORE DETAILS

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Upgrade with confidence

Making the switch to Sonu is simple.

Try risk-free
for 100 nights

Experience the SONU Sleep System at home with the current in-home trial period and hassle-free returns.

Free shipping
on every order

Free Shipping supports the full SONU experience from delivery through setup.

Financing from
0% APR

Current homepage financing includes starting from 0% APR with $0 down where approved.

Built around
your sleep style

Use the selector to find the mattress, pillows and accessories that fit the way you rest.

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100-Night Trial

Try Sonu
at home.

If the SONU Sleep System somehow is not for you, let us know and we will come and get it.

Free Shipping
In-Home Trial Period
Hassle-Free Returns

Learn More Get The Sonu

Comfort Insert

PAY NOW

PAY MONTHLY

Relief nationwide.

Game changer

Finally sleeping again!

Finally!

Fantastic!

Relief from shoulder and neck pain

Life changing

The Benefits of Sleeping on a Sonu.

Real reactions to discovering Sonu.

Made In The U.S.A.

Making the switch to Sonu is simple.

Try risk-freefor 100 nights

Free shippingon every order

Financing from0% APR

Built aroundyour sleep style

Try Sonu at home.

Try risk-free
for 100 nights

Free shipping
on every order

Financing from
0% APR

Built around
your sleep style

Try Sonu
at home.