1. Stay cool up to 120min
2. Smart Neckband freezes and melts
by itself repeatedly by absorbing
and releasing heat.
3. Through this cycle, the wearer can
feel the coolness.
4. After Cooling time:10min in the ice water or 20min in the freezer
product name: neck cooler
melting point: about 28°C
material External: TPU / Internal: PCM material
size: Neck circumference is about 40cm