The Simba Hybrid Pillow arrived for review and I was super excited, initially removing a few of the integral Nanotubes to adjust. You tweak these little pieces, depending on whether a soft, medium or hard pillow is preferred. Generally a medium kinda gal, I took out four handfuls, storing in the included drawstring bag for future use. Developed for NASA, this pillow is pure perfection. Comprising Outlast technology, your temperature is controlled. For me, this was a huge highlight as I constantly toss and turn if I’m too hot/cold. I kid you not, as soon as sinking into the Simba pillow, my head was in heaven. Falling asleep almost instantly, even my husband remarked how relaxed I was the next day. I probably can’t rave about this pillow enough and safe to say, I’m addicted. So if you struggle to fall asleep or are restless throughout the night, it is a definitely must-try. Be warned, you will take the Simba Hybrid Pillow everywhere forevermore.