Instant cooling or heat relief for migraines, sinus headaches, fevers and dry/puffy eyes. Made with a layer of contoured gel that stays flexible when frozen, it covers the entire front of your head for soothing cold therapy. Soft, fabric cover has a hook-and-loop closure for a comfortable fit. Chill in freezer for 1 hour or warm in the microwave for heat therapy. Nylon, Gel. Imported. Wipe clean.