The Cool Vest can be persisted Frozenness for 5~6 hours with Triple Insulation Systems.

• No Dew Condensation
• Semi-Permanent Products (When Refrigerant is melted, reusable Products after re-freezing)
• Apply a Velcro Elasticity Belt (Fixed easily in the Body)
• Apply a Neoprene Fabric for Lightness and Insulation