After experimenting this weekend with the TORRAS, ZONE + S3 products and when I walk a lot, I love this ventilation/cooling/city field set. With watching a long and hot summer, almost 30 degrees Celsius in Tel Aviv, on walks and going outside, even sitting with the dog in the dog park when there is no breeze, the wind blows and together with the cooling through the cooling plates in the neck. (in addition to the app on supporting devices such as S2 and 3), another fan, the Zone, worn with the belt on the stomach/front of the chest with the wind from the bottom up towards the face, with the option of wearing it under clothes when doing medium-high intensity sports to spread the sweat close to the chest. To wear it over the clothes in sports it will not be felt since there is already wind due to the running/walking fast without the device in front of the body. Wear the device over them while sitting or walking with pleasure on outdoor trips or just sitting in the air conditioner to disperse the sweat. It gives a slightly or even much more pleasant feeling. Tip: You can put the fan in the fridge before going outside. The material that changes the state of aggregation and thus cools does not harden at room temperature when it is above 24 degrees. It will remain liquid and will not cool down because the body temperature will be close to the ambient temperature. That is why you should put the device in the refrigerator so that the material hardens and thus feel the cooling for the first 10 minutes when you go out and attach the device to your body. One of the disadvantages is that there is no dedicated carrying case for the device to protect it. This is also connected to the fact that already on my first outing with the device, when I put it in the backpack, it started working because the power switch was easily pressed by objects that could accidentally press it. There is no bag that will protect even the shiny coating that is very nicely designed and when there is nothing that will protect the circuit breaker from accidentally pressing it in the bag. Advantages apart from what I wrote above: charging even during use with a rechargeable battery gives endless use even on the road, but at the same time, with the S3 device charging is very slow when the device is in use at the same time.