The Solar PERFORMANCE Pillow series is supported by Ver-Tex® 6.1 which is enchained to wick away moisture 2.5 times faster than Ver-Tex® 6.0. The Ver-Tex® cover, which is removable and washable, helps your body's natural nighttime temperature drop to ideal sleeping temperature which promotes better sleep. The Solar series features a dual construction design with a hybrid blend fill. One side features a React® crown that contours to your body shape providing weightless support of your head, neck and shoulders. On the flip side, the Boost® foam blend is hypoallergenic, breathable and soft, which provides smooth motion performance and eliminates pillow bounce. Not to mention, the Air-X® ventilated panels which increase air flow and a filter fabric which prevents allergens and dander from entering the pillow core.