Amerisleep AS4 vs Nectar Premier

The AS4 is our medium-soft mattress. It offers plush comfort with targeted support that helps you sleep your best. Plus it stays cool all night, making it our most popular model with side sleepers.

The Nectar Premier is plush but highly supportive. Around a 6.5 out of 10 on the firmness scale. You have a full 365 nights to try the mattress in the comfort of your own home. Nectar Premier is the result of strategic engineering for comfy, cool, and supportive slumbers for all sleeper styles. So whether you sprawl like you're single or conk out on your side, Nectar's ideal ratio of softness, firmness and support works for you.

Three layer construction:

• Bio-Pur® foam
• HIVE® transition layer
• Bio-Core® foam support layer
• Refresh Cooling Cover.

The Nectar Premier Memory Foam Mattress features 13" of premium materials and has 3 layers:

• 3" Memory Foam with Surface-Infused Phase Change Material (PCM) Gel (Density: 3.5 lbs, ILD: 10)
• 3" Memory Foam (Density: 2.5 lbs, ILD: 18)
• 7" PU Support Foam (Density 1.8 lbs, ILD: 36).

Traditional memory foam is made from dense material, so it traps your body heat and can make you sweaty and uncomfortable while you're in bed - and who can sleep like that?
We developed our foam with an enhanced "open cell structure", which means there is more air space between the foam particles. That space wicks away heat while you sleep, and can keep you cooler and more comfortable.

While Nectar uses cooling materials in the cover, Nectar Premier builds on this by using ActiveCool memory foam, which dynamically adjusts to individual body heat. So if you sleep hot, it wicks your heat and stores it. If you sleep cool, it releases stored heat to help warm you. And with the Premier, you get the cooling cover, too. So you, or you both, or you all sleep even-steven and wake up like hibernation's over.

Our Bio-Core® foam support layer won't sag even after decades of use. And, like our Bio-Pur® foam, it's partially made from plants instead of petroleum so it's eco-friendly.
The HIVE® layer features hundreds of foam hexagons grouped into five comfort zones. Each zone is designed to provide extra cushion where you want it and support where you need it. That way your body gets the support it needs to stay properly aligned, so you can sleep your best.

More Cradling And Contouring. Less Motion Transfer.
The Nectar Premier features an innovative memory foam with a higher density than what is found in traditional foam products. The increased density helps provide superior pressure relief for a plush, floaty rest.

The HIVE® transition layer has precision-cut channels that carry away even more heat and moisture. It's enough to make you feel like you're weightlessly resting on a cloud.
Amerisleep's Bio-Pur® material features an advanced-open cell design. This makes Bio-Pur® more breathable and responsive than memory foam, which will keep you cool and comfortable all night. Plus we make Bio-Pur® from partially plant-based sources using a zero-emission process. That means it's the most eco-friendly material of its kind.

The top 3-inch layer of gel-infused memory foam with phase-change material (PCM) helps provide temperature regulation while you sleep. (Designed in labs to react to your rising and dropping body temperatures, auto-adjusting to your temperature as you sleep.)

Bio-Pur® contours to your body to relieve pressure points and bounces back fast, so you won't feel "stuck" during the night.
Our HIVE® transition layer provides targeted support and pressure relief so you can sleep in perfect alignment. It gives your head, back, and legs more support, and your shoulders and hips more cushion.

The top memory foam layer helps provide cushioning for the body at its most sensitive areas, like the pressure points. This is often described as the much-loved, traditional "memory foam" feel: softness, cushion, pressure relief, comfort, etc.
The second memory foam layer, or the transition layer, is intended to help provide resistance against the body as you lay down on top of the mattress. If you were to jump onto your mattress, this layer prevents you from feeling the base support layer of foam.
The base support layer is intended to provide solid support for the layers above it. It helps give structure and stability for all of the other components to perform as desired.

Refresh Cooling Cover
The Refresh Cover draws heat from your skin for a delightfully cool-to-the-touch feel. On average, your sleeping surface will stay 7 degrees cooler over an eight-hour night of rest compared to a traditional 100% polyester cover. This scientifically engineered fabric uses minerals to help convert your natural body heat into far infrared energy. This type of energy increases blood circulation to help speed up muscle recovery and improve quality of sleep.

A soft, breathable poly-blend cover featuring heat wicking, cooling technology. Polyethylene, which is known to help draw heat away from the body, thus providing a slight "cooling sensation" to the touch. Constructed using alternating nylon and polyethylene yarns. These materials are known to provide give, thus promoting and enhancing the benefits of the memory foam layers beneath it.

We provide standard free curbside shipping to anywhere in the contiguous USA. Mattresses ship as quickly as 3-5 working days (excluding major holidays) via FedEx, once shipped, delivery takes approximately 1-5 business days.

Enjoy free shipping in the contiguous United States. We will deliver your new mattress right to your front door - fast and convenient! If you decide that you're not in love with your new Nectar Premier mattress, returns are free too!