Save $300

The Wave by Mantua

The best adjustable lumbar support available, powered by programmable remote and mobile app. Built to last and backed by an excellent 20 year warranty.

At A Glance

Free Express DeliveryHead and Foot LiftMassageMobile AppUnderbed LightingWall HuggingWireless Remote20 Year Warranty

Modular design and edge-to-edge lumbar support with therapeutic massage. All the best adjustable bed features are available with the Contemporary III. Including heavy-duty lift motors, under-bed lights, five preset positions, and a programmable remote and voice-powered app. Try the exclusive lounge position to ease lower back pain.


Edge-to-edge adjustable lumbar support A separated section gives support to your lower back just where you need it to relieve pain
Under-bed light Don’t worry about stumbling around in the dark when you use the gentle illumination of our LED light in a choice of colors
Dual USB outlets A built-in outlet on each side of the base keeps your devices charged and ready to use for work or play
Lounge position Lower the legs and take pressure off the lower back with our exclusive lounge position
Modular design Contour to your body’s preferred position with five moving sections
Anti-snore position Sleep better by using the anti-snore position to raise the head and open airways to reduce snoring
Zero gravity position Improve blood flow, reduce back pain, and feel almost weightless in zero gravity
Incline position Get neck support and lift your feet up for better support and relaxation while you read, work, watch, or browse
Voice-powered mobile app Customize your relaxation without putting down your mobile device, and use voice controls for easy adjustment
Therapeutic massage Choose the location and intensity of your massage for enhanced R&R
Improved lift capacity Heavy-duty motors lift up to 850 lb. per base so you can pile on the thick mattress and extra pillows
Flat position Press one button to return to a flat, neutral position
Fit Rize adjustable beds are designed to fit inside most existing headboard/footboard/rail systems
Continuous motion mode Set the bed to go through a series of positions automatically
Steel post legs For extra durability, we use steel post legs that can support even the thickest mattress
Gravity release A built-in safety feature to reduces stress on objects caught under the bed, so there’s no worry about pinching or pressing
Sync up two bases Twin XL and split sizes offer an easy-to-use sync cable so you can operate both sides of the bed together
King and California King Large sizes available as a single piece for simplicity and value (Contact us to order)
Adjustable headboard brackets Available for additional purchase, these headboard brackets make it easy to attach your favorite headboard to your adjustable bed
Programmable positions Once you find a favorite position, you’ll never want to go back, so save your custom settings to use any time

20-year warranty

Rest assured – the warranty for this Rize adjustable bed includes the first 5 years with full coverage of parts and labor as part of its 20-year limited warranty.


Share your thoughts!

5 out of 5 stars

1 review

Let us know what you think...

Review is a required field.

Question is a required field.

What others are saying

  1. Rize Comtemporary III is wonderful for my back!

    Samantha H.

    Rize Comtemporary III is wonderful for my back! The lumbar support on this bed is phenomenal!! This is the best feature to me of all the features it has. The massage is just ok. It’s a bit loud and is upper body only. I guess they had to eliminate one of the massage motors for the lower body (there is a place for a second motor to plug in on the control box) in order to provide the lumbar support. But like I said, the lumbar support is far more important to me than a full body massage. My only complaint is the remote. Although the buttons light up, the lettering does not. So until you memorize which button does what, it is a bit hard to navigate in the dark. Thank you to whoever designed this bed. My back and I love you!

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  2. Sturdy. I am a large man.

    Thomas K.

    My biggest worry buying an adjustable bed was the weight capacity and how solid the frame was. I am a large man, 277 pounds. It makes no noise, no squeaks, it doesn’t move on the floor, when I’m getting in and out, or moving in bed. This bed frame is solid. It sits me up and lays me down quietly. I overuse its features because of my spinal injury. I’m impressed and satisfied with my purchase.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...




A link to set a new password will be sent to your email address.

Continue as a Guest

Don't have an account? Sign Up

Store Reviews

Compatible products…

More store…