Atelier 3 in 1 Instacool Pillow Medical Grade Memory Foam Gel Cooling Comfort Therapy Pad Easy to use and clean Provides a cooling sensation where needed Helps sooth headaches, migraines, hot flashes, high fevers, back pain, sunburns Patented fluid-cooled memory foam cushioning Medical grade materials for safety and durability. No refrigeration required Materials: Medical-grade, latex-free. Dimensions: 20.5 " x 13.5 " x .25"