The INUTEQ-DRY® evaporative cooling Smart Cool Over is a comfortable, full-fashioned & lightweight vest. By just putting normal water (max. 500 ml) inside the cooling vest, cooling will start right away. The cooling effect will last 8 op to 72 hours depending on ambient temperature, airflow & humidity. No refrigeration or additional gels or chemicals are required. The vest will reduce heat stress & fatigue, allowing you to perform better. Due to our patented system, the vest will not become wet or soggy, making it suitable for wear underneath clothing. Features The cooling effect is based on an age-old principal of cooling by evaporation The cooling effect will last 8 hours up to 72 hours depending on temperature & humidity Your skin will cool down between 5 & 15 degrees Celsius Incorporates a unique cooling technology Stays 100% dry inside & out Ultra Fresh Antibacterial treatment Core INUTEQ-DRY® technology wicking polyester fleece Machine washable & has antibacterial pr...