The literal support-core swap
- Amerisleep AS3
- HIVE-zoned Affinity foam over a Bio-Core foam base
- Amerisleep AS3 Hybrid
- 8-inch zoned pocketed coils over a 1-inch support base
Why it matters: The foam build distributes support through cut foam zones and a solid base, producing a more uniform, slow-moving contour. The Hybrid's individual coils compress and rebound under each sleeper, giving changing positions more immediate pushback and opening space inside the mattress for air to move.

