Memory foam is obsolete! experience the sublime comfort and support of serene performance foam to Sleep Better and WAKE more refreshed. This is the greatest advancement in comfort technology, providing outstanding support and revitalizing sleep for your active lifestyle. Serene reduces pressure better, sleeps cooler, and recovers faster than memory foam. Features active air technology for increased air flow and cooler comfort. The traditional design of this pillow with 2.25-Inch gusset allows for sleeping in any position with perfect support to upper shoulder and neck to reduce strain.