Ver-tex Instant-cooling Fabric, Air-x Maximum Breathability Fabric U-SHAPED DESIGN: Featuring an elongated u-shaped curve, this one-size-fits-all pillow naturally contours to your body for superior support throughout the night. It's the perfect pillow for pregnant women, athletes, and weekend warriors. SUPPORT YOU CRAVE: We filled this multi-use pillow with our responsive React fill foam technology and silk-like fibers for a softer, conforming feel. This blend provides unbeatable support for neck, back, side, and stomach sleepers. DUAL-SIDED COMFORT: One side of the pillow's cover features our Air-X fabric to promote continuous airflow. The other side features our Ver-Tex technology with heat-deflecting fibers for a cool-to-the-touch sensation.