DetailsThe Chill-Its hard hat neck shade, from Ergodyne, keeps the sun off your neck while also providing cooling comfort. Hook and loop suspension allows for quick and easy attachment to hard hats. It is designed with an advanced PVA material that activates easily and quickly when run under water for one minute. It is reusable - simply re-soak to reactivate. The high visibility Lime outer shell also provides greater visibility from the rear.