Travel and exhaustion won't go hand in hand with the Herschel Supply Co. Memory Foam Pillow. Get the sleep you need without wasting your precious time in a new place by taking naps in the hotel. Instead, sleep comfortably on the bus, plane, or in the car with high-density memory foam. If you're traveling in warm climates, the cooling gel that's integrated into the top of the pillow will help to keep you from waking up overheated in a panic.