In a February 2025 conference paper, researchers developed an inorganic PCM formula (melting point ~26 °C) and successfully embedded it into wearable devices like wristbands. Testing showed the PCM absorbed body heat for over 120 minutes of effective cooling; it can be recharged quickly in cool water or a freezer within ~15 minutes.
Real-World Uses:
- Outdoor workers or athletes benefit from sustained local cooling at pulse points (wrist/neck), reducing heat stress during activity.
- Hot flash relief for menopausal individuals-possessively absorbing heat over time to lessen discomfort.
Pros on this product
- Long-duration cooling thanks to latent heat storage-no electricity needed until recharging.
- Localized on-demand use-wristbands are less intrusive than cooling vests.
- Reusable-PCM can be re-frozen quickly, making them suitable for repeat daily use.
In short, PCM wristbands can offer sustained, passive cooling at key pulse points, with practical use in heat-prone jobs, fitness, menopause comfort, and eco-friendly personal climate control.
