I have now experienced all four seasons over and under wool room bedding. I have noticed significantly improved sleep and best of all I do not wake up wet through due to night sweats. For this reason also bedding smells much fresher for more days after changing your sheets. I have been taking Tamoxifen following breast cancer for two and half years which causes hot flushes and had a hysterectomy twelve months later and not allowed to take HRT due to the former illness....so I do know what i am talking about. Despite the expense compared to cheaper bedding options I feel it has been worth every penny. Thank you The Wool Room. Jan C