Amerisleep AS4 vs Molecule 1

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.

Both MOLECULE mattresses are considered to be medium to medium-firm.

Three layer construction:

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

All the essential features at an affordable price. Featuring a 3 layer construction:

• 2" RestoreFLO™ layer (Density: 2.5lbs, ILD: 9)
• 3" RecoveryFLO™ layer (Density: 1.65lbs, ILD: 40)
• 7" ContourFLO™ layer (Density: 1.5lbs, ILD: 35).

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.

Our engineers set out to develop the perfect recovery-focused mattress at an affordable price that still incorporates the key elements of Air-Engineering that sets MOLECULE apart. The MOLECULE 1 is the perfect combination of value and temperature-regulating features. Furthermore, Molecule mattresses are fabricated virtually emissions-free. Variable Pressure Foaming VPF™ is the most environmentally-friendly foam manufacturing process.

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.

An ample seven inches of firm support foam in the base layer fosters healthy spine alignment.

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.

Proprietary foam (RestoreFLO™) has enhanced and consistent airflow properties, even when compressed. The foam is infused with gel micro beads for ideal temperature and moisture management. Scientifically tested for long-lasting durability and comfort.

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.

RestoreFLO™: Features exceptional pressure relief.
RecoveryFLO™: Precision-contoured 3D geometric surface provides targeted, self-adjusting support for different parts of the body. A 3-Zone dynamic response layer with smaller diamond zones for a softer feel around the head and feet and larger hexagon zones in the center designed for additional support and pressure relief in the lumbar region.

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.

Our advanced cover material features a unique combination of heat and moisture wicking technologies to further regulate the microclimate between your body and the sleep surface. As your body temperature changes throughout the night, an embedded temperature sensitive polymer, responds dynamically, adjusting evaporation and cooling. Cover is 98% Polyester, 2% Lycra.

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.

Our deliveries are exclusively handled by FedEx, and you should expect your mattress within one week from when you place your order.