ObusForme Charcoal Travel Neck PillowCharcoal infused memory foam with gel top U Shape designed memory foam conforms to head and neck Gel pad reduces heat build up The removable, zippered cover is machine washable Benefits of using Charcoal infused foam: Provides odor and moisture absorbing qualities. Improves air circulation and temperature regulation. Naturally antimicrobial and resistant to; allergens, mold, bacteria and dust mites