I have neck and shoulder problems from an auto accident. I'm a side sleeper and have tried almost every type of pillow out there! I always wake-up with a stiff neck and sore shoulders. I love the softness of down, but it does not have enough support! Fiber fill pillows are either too hard or too un-supportive! I always prefered a softer pillow over firmer ones. My chiropractor recommended that I get visco-elastic memory foam pillows. I tried several, most were way too hot, your head just sweats! Then I found Iso-Cool memory foam pillows with Outlast fabric! I first learned about Outlast fabric when I bought a new Serta mattress last year. It really works! It does keep you cooler. My mattress also has memory foam in it! Serta buys all their memory foam from the Carpenter Co. They are the maker of the Iso-Cool pillows! So I thought I would give them a try. The first few days I was very skeptical, they were cool to sleep on, but were firmer than I'm used to. But now 2 weeks later! I realize, I have not woken up with a stiff neck or sore shoulders at all. Including the first night sleeping on them. They also make a gussetted side sleeper version of this pillow. Even though I'm a side sleeper, I seem to prefer the traditional shaped pillow. These pillows mold to the contours of your head and neck and they don't push back. The traditional shape can adapt to all sleep positions. Give them a week or so if you never slept on memory foam pillows before! You will get used to them and find your perfect sleeping position. Also all memory foam pillows have a strong odor when new! Although not offensive, kind of a slight chemical odor. I took the plastic wrap off my pillows and un-zipped the fabric cover and left them air out for 2 days. The odor 2 weeks later is all but gone! These Iso-Cool pillows are very well made! Nice durable fabric covers that are washable! They have an unheard of 15 year warranty! They are the best pillows I have ever slept on! Just give them a few days and I think you'll agree! You'll find your perfect position and you'll barely move the rest of the night.