The Dusk 2.0 Performance Pillow is SLEEP TESTED for back sleepers or medium body types. Dusk provides the perfect cushion for your shoulders if you rest them on your pillow when you sleep on your back. The unique dual chamber construction of the Circadian Series features a Boost® foam crown and Boost foam blend which ensures weightless pressure relief that won’t bottom out, creating the perfect pillow for soft support with no rebound. The Ver-Tex® 6.0 climate control fabric provides a cool to touch feeling and continuous heat deflection, regulating your body temperature for a cooler nights rest. The Air-X® ventilated panels increase airflow and feature a filter fabric which prevents allergens and dander from entering the pillow core.