Serene™ foam is enhanced with Active Air Technology™, increasing the level of support without compromising comfort. Active Air Technology™ provides both support and comfort to prevent tossing and turning throughout the night. Serene™ Comfort Foam cradles and comforts your head while millions of air support cells give the support vital to a good night’s sleep. The Serene Foam pillows are available in three different shapes to cater to a wide variety of sleep styles. The side sleeper shape has a 2.25 inch gusset that provides greater support and comfort for side sleepers. Serene™ foam sleeps cool. It is not temperature sensitive, so heat dissipates quickly, keeping you cool and dry. The Serene™ Comfort foam pillow is 100% hypoallergenic and the foam is proudly 100% American made.