Proven performance in real-world environments
Equipment designed to offer maximum thermal comfort and protection in demanding conditions. Efficient solutions that optimize productivity and ensure a safe, cool work environment.
Thermal Vests
Cooling Technologies: PCM and Evaporative
Not all cooling vests work the same way. There are two main technologies, and choosing the right one depends on the type of work and the environment.
PCM (Phase Change Material) Cooling Vests
Vests with PCM technology incorporate plates that are pre-cooled in a refrigerator or freezer. Once activated, they release cold consistently for 2 to 4 hours, regardless of ambient humidity or worker movement. They are ideal for enclosed environments, static jobs, or situations where the vest is worn under protective clothing, such as fire-retardant suits, coveralls, or CBRN gear.
Blizzcool’s BW01 and BW02 models use this technology, with bio-based phase change plates that maintain a constant, safe temperature in contact with the skin.
Evaporative Cooling Vests
Evaporative technology is based on a simple and very effective principle: the vest is activated by submerging it in water for one or two minutes. The technical inner fabric retains moisture and releases it progressively, generating a cooling effect of up to 15°C below ambient temperature. A single activation can provide 4 to 8 hours of continuous cooling, and when it loses effect, simply re-wet it.
This technology is especially effective outdoors with airflow, and is perfect for work in construction, public works, agriculture, or outdoor logistics. Blizzcool’s BW05 and BW08 models combine this technology with breathable technical fabrics and, in the case of the BW08, with high-visibility reflective bands for environments that require it.
Which sectors are work cooling vests suitable for?
The work cooling vest is designed for any professional who performs their activity in conditions of intense heat. Among the sectors where it is most used are:
- Construction and public works: workers exposed to the sun for hours, often with protective clothing on.
- Agriculture and horticulture: long outdoor workdays during the hottest months.
- Logistics and warehouses: unconditioned spaces or those with industrial heat sources.
- Industry and manufacturing: ovens, foundries, welding, and other sources of extreme indoor heat.
- Municipal services and cleaning: continuous physical outdoor work during the summer.
- Transport and delivery: drivers and delivery personnel who alternate between cabins and outdoor work.
How to choose the right cooling vest for your job?
When selecting a work cooling vest, it is advisable to consider four key factors:
Work environment. If you work outdoors with ventilation, the evaporative vest is the most practical and longest-lasting option. If you work indoors with little airflow, or under protective clothing, PCM offers more predictable results.
Duration of the workday. For long workdays without the possibility of reactivation, the evaporative vest lasts longer. For short workdays or with scheduled breaks, PCM is more than sufficient.
Compatibility with PPE. If the vest must be worn under another protective garment, choose PCM technology: it does not dampen outer clothing and maintains comfort without compromising the protective function of the equipment.
High visibility regulations. In environments with vehicle traffic or heavy machinery, the BW08 model with reflective bands meets the visibility requirements for construction sites.
How to activate and care for your cooling vest
Evaporative vests (BW05, BW08): Submerge the vest in cold water for 1–2 minutes. Gently wring out excess water without twisting the fabric. Briefly dry the inside with a cloth and put it on. The cooling effect begins immediately. When it loses effect, repeat the process.
PCM vests (BW01, BW02): Place the plates in the refrigerator (minimum 60 minutes) or freezer (30–40 minutes) until completely solid. Place them in the vest compartments and you’re ready. When the plates return to a liquid state, remove them and re-cool them.
For maintenance of both models, hand washing with cold water and neutral detergent is recommended. Avoid washing machines, spin cycles, bleach, and fabric softeners. Always store the vest completely dry.
Frequently Asked Questions about Work Cooling Vests
How many hours does the cooling last?
It depends on the technology and environmental conditions. Blizzcool evaporative vests offer 4 to 8 hours per activation. PCM vests maintain a constant temperature for 2 to 4 hours, after which the plates simply need to be re-cooled.
Can the vest be worn under protective clothing?
Yes. The PCM models BW01 and BW02 are designed to be worn under other garments without wetting the exterior, making them compatible with personal protective equipment in industry and construction.
What is the difference between a cooling vest and a refreshing vest?
In practice, both terms are used interchangeably. Technically, cooling vests are usually associated with PCM technology (constant and controlled temperature), while refreshing vests refer more to evaporative technology. At Blizzcool, we offer both solutions.
Do Blizzcool vests comply with labor regulations?
The BW08 model complies with EN ISO 20471 high-visibility regulations. For other models, as they are thermal comfort garments and not certified PPE, we recommend consulting your company’s risk prevention manager to determine the most suitable equipment combination for your job.
