Cool Side U Shaped Travel Pillow Uses Silicone Gel and Slow Rebound Memory Foam Technology to Give Your Neck Comfortable Support While Sleeping or Reading (Cobalt Blue) Unique design gives you a refreshing Cool Side, plus a Warm Side when your want to snuggle up. Keeps your head from jostling around during travel so you can ease off to sleep much quicker and easier. Slow Rebound Memory Foam can be easily compressed to fit in much smaller travel bags during transit. So comfortable you may want to ditch your hotel pillow when you get to your destination.