This PCM under cool Vest is a patent product by Ru Entropy.

Our filling material are all bio renewable based organic PCMs with high latent of heat, they are either in solid-liquid form or solid-solid gel form. When the PCMs in the vest starts to melt they absorb heat from your body.This process allows for a gentle cooling of the body allowing it to stabilize body temperature instead of shocking the body with extreme cold, as one does with an ice vest.

The vest is often used under military comabt gear, hazardous materials suits, mascot costumes and other professional apparels.

• It is recommnded to use tight to the body, with a functional T-shirt between, and a covering garment on top.
• It is also recommended to use in indoor environemnt or for sports training.
• It is also recommended to old people or patients who cannot bear strong cooling and need soothing comfort cold feel.

The vest lasts cooling from 1hour to 2 hours depending on how to use it and environment temperature.