Amerisleep AS4 vs Nolah Signature

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.

Plush comfort with firm support. The Nolah Signature is a soft/medium on the firmness scale, rated a 4-5 out of 10.

Three layer construction:

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

The Nolah Signature has 75% more premium pressure-relieving AirFoam™️ than the Original 10" mattress, and has the following 4 layers:

• 2.5" Plush Contouring Nolah AirFoam™
• 1.5" Deep and Supportive High-Resilience Foam
• 1" Firm Pressure-Relieving Nolah AirFoam™
• 7" Reinforced High-Density Core Foundation Foam.

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.

The Signature 12" mattress offers the same ground-breaking benefits as the Original, but with next-generation technology and the added luxury of a second AirFoam™️ layer. This all-in-one mattress sleeps cool, provides unbeatable pressure relief, and withstands years of wear and tear. It makes memory foam mattresses look and feel outdated.

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.

This luxury mattress relieves pressure on the neck, hips, and shoulders to reduce nightly aches and pains while providing perfect spinal alignment and lumbar support.

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.

Nolah AirFoam™ is guaranteed to sleep cooler than memory foam. The generous 2.5" comfort layer keeps you cool.

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 plush AirFoam™ top layer provides unbeatable pressure relief and contours perfectly to your body without trapping you "in the mattress" like memory foam.
High-resilience foam in the second layer is stronger and more durable than memory foam and provides a healthy and responsive bounce to keep you sound asleep all night.
The firmer AirFoam™ used in the third layer elevates pressure relief. Without pressure points on your neck, hips, and shoulders, lying in bed will feel like floating on a cloud.
The base reinforces the support and contouring of the upper layers.

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.

Luxurious Organic Cotton Cover
When only the purest and best is good enough, Nolah turned to soft luxurious organic cotton. This signature, diamond-patterned, organic cotton cover is unbleached and free from harsh chemicals. It stays cool, is breathable, and wicks away moisture to keep you comfortable all night. It comes in an aesthetically-pleasing ivory color.
The border cover is made with premium four-way knitted poly-yarns, this cover was designed for durability. The bottom cover features a non-skid fabric to ensure the mattress doesn't move on the bed frame.

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.

You will receive your Nolah mattress in 2-8 business days after placing your order. We need a business day or two to craft your Nolah mattress before shipping it with UPS to your front door. UPS shipping takes 1-4 business days depending on your zip.