At 1:30 AM the Only Sound You Should Hear Is Your Heartbeat. 

SLEEP COOLER!    SAVE BIGGER!

Master of Zen is the coolest memory foam mattress and the most affordable. We use advanced temperature regulating materials that others do not to keep you cool all night long.

With Every Feature You Need For Amazing Sleep!

• Free Delivery
• Easy and Fast Set Up
• 90 Night Sleep Trial
• Better Support
• People Safe And Eco-Friendly
• 100% Made in USA

A MATTRESS YOU'LL LOVE

A price you can't resist

• Good Cooling Sleep
• Proper Back Support
• Tremendous Value

"5 stars for the Master of Zen Mattress!  I'm waking up refreshed in the morning instead of having tossed and turned all night!"

by Beth in TN

"From night one, I have experienced less waking due to trying to find a comfortable position! Wherever I lay, is where I stay!"

by Eaton in NYC

"I couldn't be happier! No more waking up in the middle of the night to switch positions, and my lower back pain is feeling better during the day too."

by Rebecca in TN

DO YOU WANT TO STOP WAKING UP HOT?

THIS IS WHY YOU SLEEP HOT

Core body temperature fluctuates during the day but drops at night to help initiate sleep. Sleep is most likely to occur when core body temperature decreases and far less likely to occur when it rises. 

Aside from your body's natural thermoregulation that you can't really control,  the greatest cause of hot disruptive sleep is your sleep environment: room temperature, linens, pillows, and mattresses that store heat rather than help it escape.

SLEEPING HOT IS REALLY BAD 

How bad? Fragmented sleep due to excesive body heat may reduce slow-wave and REM (Rapid Eye Movement) sleep and cause a negative effect on one’s mood and alertness. 

It may also have negative effects on complex memory retention, decision-making, and risk-taking behavior. Add to that list blood pressure control and glucose regulation issues and the message is clear: hot sleep is a serious problem.

THERE IS AN EASY SOLUTION TO HOT SLEEP!

Master of Zen incorporates the latest science-backed technologies to create the coolest memory foam sleep experience, with:

• 700% Better Heat Conductivity
• 45% Faster Heat Removal
• Active Cooling Materials

TWO REASONS YOU'LL SLEEP A LOT COOLER!

FASTER HEAT CONDUCTIVITY

Copper gel infusion in Master of Zen speeds heat transfer by 45% and improves heat conductivity 700%. 

Every second matters when it comes to remaining soundly asleep. Other traditional memory foam mattresses hold heat longer, greatly increasing the likeliness that you'll wake up hot. 

The temperature regulating gel and the super-conductive copper create a highly improved and effective pathway for heat to move away from your body and escape by convection.

ACTIVE HEAT REMOVAL 

Studies have repeated shown that sleep surfaces with temperatures cooler than skin temperature provide longer and more restful sleep. There is only one proven method to actively remove heat while you sleep without the use of complicated electrical contraptions. 

Large open cells in Copper-infused gel release heat fast so surface temperatures stay cooler.

Copper-infused gel is also naturally antimicrobrial. Sleep cooler and more securely with the conductive power of Copper and pressure relief of Copper Gel.

THE STUFF DREAMS ARE MADE OF 

Experience the cool pairing of new, open-cell
Copper Gel-infused foam technology with
expert hyper-conductive heat reduction, and 
you will agree Master of Zen is the Memory
Foam mattress for Memory Foam lovers.

COMFORTABLE. AFFORDABLE.
COOLING. SUPPORTIVE.
100% USA MADE .

Master of Zen has it all.

Plus a lot of easy ZZZ's.
And this premium orthopedic mattress won't cost you a fortune either.

IF YOUR LOWER BACK COULD SHOP FOR YOU…
MORE SUPPORT IS BETTER THAN LESS.

Master of Zen is an excellent choice if you are suffering from certain back pains because it aligns your spine and supports your lumbar region with High Resiliency foam. Now, your back muscles not only get the relief they need, but a night-after-night opportunity to heal.

Experience more head-to-toe
back support with 33% added
High Resiliency foam!

• Deep Sleep Begins With Proper Alignment
• Enjoy Increased Circulation
• Relaxed Lumbar Muscles

LOWER BACK DISCOMFORT HATES US.

BACK PAIN GOT YOU DOWN?

According to medical research, over 80% of people will experience back pain at some point in our lives.  Harvard Medical School journals tells us that back pain is one of the main reasons that people begin to lose mobility in middle age. 

Pain keeps people from engaging in physical activity, making it more difficult to maintain a healthy weight and keep up their strength, stamina, and balance as they age. 

Treating and managing back pain is crucial to living a healthy and active life. Deep, slow-wave, REM (Rapid Eye Movement) sleep is known to be the only sleep stage where muscles can heal and repair themselves.

YOUR MATTRESS IS YOUR BACK'S BFF

Back muscles don’t go to sleep when you do — they can stay tense if your mattress doesn’t provide proper, continuous support.

As it relates to providing correct sleep posture, comfort, increased blood circulation and relaxed lower back muscles only occur when your body is supported correctly. Consider the constant stress your spine endures every day and it becomes obvious your back needs to rest in its most natural and comfortable position every night.

Master of Zen contours and supports you evenly and reduces the pressure points that cause tossing and turning. With the 33% extra support, back muscles finally get the relief they need.





Uniquely Contours To Your Body 

Our advanced Cooling Copper Gel adapts to each shape
and position, relieving pressure while dispersing body heat.
Sleep deeper and longer just like you used to!

Reduce Tossing & Turning

The latest open-cell technology reacts naturally to your body, reducing pressure points that make you to change positions. Now you wake up rested in the same position you fell asleep!

‘DO NOT DISTURB’ Sleep For Both of You

Our exclusive Copper Gel memory foam reduces sleep
disruptions by isolating the movement of your partner.
Each sleeper enjoys sound, peaceful and restful sleep!

90 NIGHT NINJA SLEEP TRIAL

We absolutely stand behind the quality of our products. We want you to be confident too, so we offer our 90 Night Ninja Sleep Trial and a 10 year non-prorated warranty. 

Our return policy is designed to ensure you receive the best mattress that fits your specific sleep needs and helps you get a cooler and better night’s rest. If you decide that your Sleep Ninjas mattress isn't right for you, our return process is easy.

PROFILE :

12" Inches

SIZE AVAILABILITY:

Twin: 38" x 75"
Queen: 60" x 80"
King: 76" x 80"

*Dimensions of each individual mattress may vary.

BASE:

Works with any flat, firm, stable foundation, platform bed, or adjustable base

COOL FACTOR:

State-of-the-art accelerated cooling technology removes heat 7 times faster than others' conventional memory foam.

MOTION ISOLATION:

Superb 'Do Not Disturb' design eliminates motion transfer

ORTHOPEDIC SUPPORT:

33% more orthopedic support for sleepers of all body types

FIRMNESS:

WARRANTY:

For 10 years after you purchase your new mattress from Sleep Ninjas, if it has a defect covered under the warranty, we will replace or repair it.

MEDIUM-FIRM MATTRESSES REDUCE LOWER BACK PAIN

According to a double blind study published in the Lancet Medical Journal, sleepers with medium-firm
mattresses had less daytime lower-back pain, as well as reduced pain while in bed and upon rising.





OUR CUSTOMERS AGREE

"The technology of the Master of Zen is really quite comfortable."

"2 weeks now sleeping on the Master of Zen and I couldn't be happier!"

"I highly recommend this mattress to everyone."

COOLER SLEEP MEANS RESTFUL SLEEP.

WE DO THAT
7 TIMES BETTER
THAN THE COMPETITION.

• Our Copper-infused Cooling Gel is 700% Faster at Dispersing Body Heat than Conventional Memory Foam. 

• State-of-the Art Cooling Materials Make Sleeping a ‘Breeze’ and are Antimicrobial. 

• New Open Cell Technology Provides Temperature-Sensing Polymers to Gently Adapt to Every Shape.

GET MORE FOR LESS WITH SLEEP NINJAS



YOU CAN SLEEP 7 TIMES COOLER IN 7 DAYS (OR LESS).

COST OF A 10 YEAR DREAM?
19₵   A NIGHT.
KEEP THE CHANGE.



EXPERIENCE SLEEP NINJAS COMFORT AND SUPPORT!

Get the coolest mattress. At the coolest price. Delivered free to your door. And save $150 today!