Outdoor Work in Scorching Summer? No More Fear!
Coolinno Cooling Vest – Persistent Coolness Powered by Phase Change Material "Black Tech"

Under the blazing sun and frequent heatwave warnings, the持续 high temperatures pose serious challenges for outdoor workers—traffic police, delivery riders, construction workers—as well as outdoor sports enthusiasts. The heat not only affects performance but also brings health risks like heatstroke and heat exhaustion.

Traditional cooling methods are either short-lived or bulky and inconvenient. Is there a solution that offers long-lasting cooling while being lightweight and comfortable?

The answer is yes. Coolinno proudly presents its new Phase Change Material (PCM) Cooling Vest—bringing you the feel of a "personal portable air conditioner" all day long, even in extreme heat.

Inside the Coolinno cooling vest is a high-latent-heat PCM that changes phase at around 28°C—the most comfortable temperature for the human body. It continuously absorbs body heat, keeping your perceived temperature steadily within a cool range.

Three Core Advantages of the Coolinno Cooling Vest

1. Long-Lasting, Constant Cooling – No More "Hot and Cold" Swings

Unlike ice, which melts and causes temperatures to rise quickly, Coolinno's PCM maintains a nearly constant temperature during the phase change. One full "charge" keeps you cool for 2–4 hours—no skin chill, no mid-way failure.

2. Lightweight and Flexible – Barely Feel It On

The vest features a lightweight design, with PCM evenly distributed over the front and back core torso areas. The breathable, moisture-wicking fabric and adjustable fit allow bending, reaching, and running without restriction.

3. Reusable – Eco-Friendly and Economical

The Coolinno cooling vest supports thousands of recharge cycles. Simply place it in a refrigerator, freezer, or cool water bath for 15–20 minutes to "recharge" the material. One investment, many summers of comfort.

Who Needs the Coolinno Cooling Vest?

1、Outdoor workers: Power line maintenance, sanitation, construction, road crew, landscaping

2、Transportation & logistics professionals: Traffic police, motorcycle officers, delivery drivers, ride-hailing couriers

3、Factory & non-air-conditioned workshop workers: Steel, foundry, glass, ceramics, and other high-heat environments

4、Outdoor sports enthusiasts: Marathon runners, cyclists, hikers, anglers

5、Emergency & epidemic response personnel: Medical staff, firefighters on standby

Real User Feedback

"Before, my shirts would be soaked through during summer duty. After wearing the Coolinno cooling vest, my chest and back stay cool. I can even handle the hottest two hours of the afternoon."
— Officer Li, City Traffic Police Brigade

*"Our workshop has no central AC; temperatures are often 35°C+. After providing Coolinno vests to our workers, they say it's even more refreshing than drinking ice water. Heat-related incidents have noticeably decreased."*
— Safety Supervisor, a machinery manufacturing plant

Let Coolinno Accompany You Through a Cool Summer

Technology isn't just a distant concept—it can be the comfort you wear. Coolinno focuses on personal thermal management, creating reliable products so that everyone working under high heat can be treated with care and coolness.