This adjustable-height memory-foam pillow with a smooth microfiber slipcase delivers personalized support and comfort. Height is adjustable via three removable viscoelastic layers (1-inch layer; 2-inch layer; 3-inch layer). Provides superior support for side sleepers: Curved indentation cradles shoulder, neck and head -- accommodates left- or right-side sleepers. Also helps reduce symptoms of mild sleep apnea, even snoring. Provides cool, lightweight breathability due to its ventilated viscoelastic memory-foam core. Naturally odor-resistant: Specially formluated memory foam with integrated green tea, activated charcoal and castor oil. Gusseted, sateen microfiber zippered case. Pillow measures approximately 25"x17.5"x6". Height is adjustable from 3" to 6". Fits standard/queen pillowcase. Machine-washable cover.