Sleep Better Tonight With Cool-jams Wicking Sleepwear For Night Sweats. Free Shipping. - Cool-jams Sleepwear is America's Top Wicking Pajama Brand. Many of our customers call Cool-jams the world's perfect pajama because our sleepwear seems to sense what the body needs. The fabric's thermal regulation properties keep the body cool and dry when it's hot and warm and cozy when the temperatures dip. Cool-jams are also perfect for people with night sweats or other thermal regulation problems. Because of the quick dry feature of Cool-jams, many of our customers tell us they are also the perfect travel pajama...quick-drying and lightweight.