Since about 15 years I have massive problems in the cervical spine. Especially when traveling by air (since one can take his usual cushion bad), I always had problems. I have tried a lot: folded bath towels, several Tempurkissen (which became quickly very soft in warm destinations and you "crashes" when turning quickly "off") - it was never less than optimal and inevitable pain. This can spoil the most beautiful holiday. Due to the positive assessments I have the pillow - in M - ordered and tested. Tempur's very expensive and the attempt was worth it to me. The pillow came to washer and dryer it went on vacation. And I can say I have never slept better in vacation! After the 2nd time washer and dryer the pillow is even better !!! Immediately this pillow will be my holiday companion, and given the low price (compared to Tempur), a new one could be set annually (in theory).