B.MARINE provides innovative products to help dynamic marine sports activities, protect the environment and people, and exist where they want to challenge. Hello, I'm Yeonsoo Cho, the representative of Nef. A few years ago, water play was limited to summer and vacation seasons. However, as marine leisure sports have diversified, you can enjoy water leisure in all four seasons. As we enjoy more marine sports than before, the number of water accidents has increased. Due to the insensitivity to safety like "I'll be okay," there was a strong perception that life-related products were enough to exist, and it is true that existing life vests were too inconvenient due to restrictions on their activity for various marine leisure. Six years ago, on a family trip, I saw my child floundering in the far sea in the sea while playing in the water. From a distance, it was hard to tell whether the child was playing or drowning. I felt strange and managed to rescue the child by swimming. At this time, I thought that even if there was someone around me who could help me, if I didn't notice it, it could lead to a big accident. I thought it would be nice if there was a personal lifesaving product that was easy to carry and wear and that anyone could easily use. However, there were already many kinds of products in the market, and I thought a lot about whether I could make these products. As an electronics engineer, I have experienced a lot of trial and error in product development. S-Tube, which has been completed through a lot of effort over the past four years, going back and forth between domestic and overseas fairs, factories, and design offices!