Canonical: https://cooltimeusa.com/blogs/news/tagged/tpu # Stay-Cool Guides & Cooling Tips | CoolTimeUSA Blog ## TPU [RSS](https://cooltimeusa.com/blogs/news.atom) [**cooling neck ring**](https://cooltimeusa.com/blogs/news/tagged/cooling-neck-ring), [**how it works**](https://cooltimeusa.com/blogs/news/tagged/how-it-works), [**PCM**](https://cooltimeusa.com/blogs/news/tagged/pcm), [**TPU**](https://cooltimeusa.com/blogs/news/tagged/tpu) - June 26, 2026 ## [What's Inside a Cooling Neck Ring (and How PCM Actually Works)](https://cooltimeusa.com/blogs/news/how-pcm-cooling-neck-rings-work) A plain-English look at what a cooling neck ring is made of and how phase change material keeps you cool. [**Read more**](https://cooltimeusa.com/blogs/news/how-pcm-cooling-neck-rings-work)