Does Siena give off a smell when opened?

Compressed memory foam mattresses often give off a slightly chemical odor when opened, called off-gassing. We haven't found this to be a significant issue in Sienas (though off-gassing is 100% safe!). If you do notice a faint smell, open a window and it should fade relatively quickly.

How easy is it to return a Siena mattress?

Incredibly easy! All you have to do is get in touch with one of our agents via chat, email, or phone (1-855-913-1789). We'll arrange for your mattress to be collected, and process your refund. Fun fact: all returned Siena mattresses are donated to charity, giving the gift of better sleep to someone who needs it.

Do I have to pay to return my Siena mattress?

Siena returns are always free! If you paid an additional delivery charge at checkout (for those shipping to Hawaii or Alaska), that fee won't be included in your refund.

Do I need to keep any of Siena's packing materials in case I decide to return it?

You don't need to keep any packing materials in order to process a return. Thank goodness, since we don't think you'd be able to get your mattress back in the box!

What is the 180-night home trial?

When you buy a Siena mattress, you get 180 nights to decide if its the right one for you! Easy returns mean you don't have to think twice before giving things a shot. (We do recommend keeping your mattress for at least 30 days before initiating a return – adjusting to any new mattress can take some time.)

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179 Reviews

The Siena Adjustable Bed Frame

Name: Siena Adjustable Bed Frame | 3 Yrs Warranty, Financing Available
Brand: Siena
SKU: classicadj
Price: 599 USD
Availability: InStock
Rating: 4.8 (179 reviews)

Find your ideal sleeping position with this sturdy, adjustable bed frame. Easily make your choice with a click of a button.

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$649

(Total Value $1,061)

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Product Overview

Independent head and foot elevation
Control via app or wireless remote with programmable memory
One-touch settings for zero gravity, anti-snore, TV recline, and more
Adjustable height – 8 and 3-inch legs & 2-inch extenders included
Easy assembly with no tools needed

Design / Construction

Design: Functional

Assembly: Minimal assembly required; no tools needed

Compatibility: Compatible with most bed frames

Product dimensions

Dimensions

60” (W) x 80” (L) x 15” (H)

Weight

149 lbs

Under Bed Clearance

2.0" - 13.0"

4 Reasons to love the Classic Adjustable Bundle

Independent Head & Foot Adjustability

What It Does?Customize comfort by adjusting your head and foot positions. Simply save your favorite positions.

Why It Helps?Allows you full control for the perfect setting you need. For a peaceful sleep, to help ease joining pain, back pain, reduce snoring or just simply to relax with a book or movie.

Anti-Snore Setting

What It Does?Slightly raises the head of the bed.

Why It Helps?Elevating the head can help open up airways to improve breathing, reducing snoring and the symptoms of sleep apnea. Hopefully leading to a more restful sleep for both the you and your partner.

Zero-Gravity & Back Support

What It Does?This NASA-inspired feature puts you in a Zero-Gravity positon, scientifically angled for comfort.

Why It Helps?Zero-gravity elevates the feet slightly above the head and can reduce pressure on the back by evenly distributing body weight, which can help relieve back pain and improve circulation. Zero-Gravity reduces pressure on your body & helps your spine to align to a neutral position.

Pick Your Height. We've Got Four.

What It Does?Our Adjustable Base comes with an 8" base leg plus 2" and 3" extenders — mix and match them to land at 8", 10", 11", or 13" off the ground.

Why It Helps?Everyone's bedroom setup is a little different, and one height doesn't fit all of them. Whether you're using a frame or going straight to the floor, our leg system gives you four real options to dial in exactly what works.

Control your frame with the Smart Remote - all at the touch of a button

Zero Gravity

Anti-Snore

Custom Elevation

Is The Split King For You?

What It Is?The Split King is made from two Twin XL adjustable bases and two Twin XL mattresses being placed side by side to create a King-sized bed.

What Are The Benefits?The Split King provides the ultimate in personalised comfort. With the Split King each bed can be adjusted independently. This allows you and your partner to adjust your base position and settings according to your desired comfort. There is also reduced motion transfer due to the separate Twin XL mattresses.

Easy To Assemble

What It Is?While our Adjustable Bed Frames are super high-tech, setting them up could not be simpler.

What Are The Benefits?Unlike many Adjustable Bed Frames, the Nectar Premier Adjustable Frame is designed specifically for simple assembly, with no tools necessary and everything (even batteries) included. Simple set up meaning you’ll be enjoying the best sleep of your life in no time at all.

Mattress shopping made simple

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*Pricing as of 02/10/2026. See Terms. Mattress models used for comparison are the Original Casper & the Purple Mattress. For full details please see Details Page.

Pairs Perfectly with Most Bed Frames

Zero Clearance DesignOur Classic Adjustable Bed Frame doesn't need any extra space, or "clearance," underneath it for operation, unlike others that require space below them for mechanisms like motors.

Works With Most FramesOur Adjustable Base fits inside most bed frames — just remove the slats, keep the adjustable base legs in place, and you're set.

Versatile HeightOur Adjustable Frame comes with an 8" base leg and 2" and 3" extenders, so you can reach your preferred height in a few combinations. Pick what works, swap them in, done.

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3 Year Warranty

Enjoy peace of mind with our extra long warranty

Free Returns

If for any reason you don't love your adjustable (95% of people do!)

The Siena Adjustable Bed Frame

$649

Product Overview

Design / Construction

Product dimensions

4 Reasons to love the Classic Adjustable Bundle

Independent Head & Foot Adjustability

Anti-Snore Setting

Zero-Gravity & Back Support

Pick Your Height. We've Got Four.

Control your frame with the Smart Remote - all at the touch of a button

Is The Split King For You?

Easy To Assemble

Mattress shopping made simple

Pairs Perfectly with Most Bed Frames

3 Year Warranty

Free Returns

Free Shipping

Got questions? We've got answers.

Try our 100% risk-free 180-night home trial

Sleep specialists available 24/7

Chat with us

Email us

Call us

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Secure purchase

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Convenient payment

Siena by Resident

4 Reasons to love the Classic Adjustable Bundle

Independent Head & Foot Adjustability

Anti-Snore Setting

Zero-Gravity & Back Support

Pick Your Height. We've Got Four.

Control your frame with the Smart Remote - all at the touch of a button

Is The Split King For You?

Easy To Assemble

Mattress shopping made simple

Pairs Perfectly with Most Bed Frames

3 Year Warranty

Free Returns

Free Shipping

Got questions? We've got answers.

Try our 100% risk-free 180-night home trial

Sleep specialists available 24/7

Chat with us

Email us

Call us