The phrase “spine-chilling” doesn’t tend to describe a feeling most people want to experience, but most people probably haven’t worn Sony’s neck-attaching cooler during peak summer heat. Sony’s Reon Pocket Pro Plus , a line of wearables that originally launched in 2019 , works differently from other fan-based neck coolers. Instead of just blowing air at your body, it chills a metal plate that presses against your neck and runs slightly down your spine. Cooling the body here makes sense, since a lot of blood flows through major arteries around your neck before circulating to the rest of your body. To maximize the benefits of that design, Sony says the upgraded Reon Pocket Pro Plus now gets 3.6 degrees Fahrenheit colder than previous models, which is a 20% improvement over the last generation. Sony also says it’s refined the Reon Pocket Pro Plus’s cooling algorithm to better adapt to your body’s temperature and environment.…