Thank you for looking. The life jacket is a manual inflatable type. Product descriptions are listed below. Brand: BALANCE LAND Color: Black Target age: Adult Features: Washable Fastener type: Buckle Achieved a buoyancy of 15.3kg, which is approximately double the safety standard buoyancy of 7.5kg! It can keep a person weighing 110kg afloat for 24 hours! This product has obtained CE and ISO certification, and is a very easy-to-use and safe type. Furthermore, it is reusable and washable. The life jacket can be freely adjusted to your preference, making it suitable for all ages and genders! Furthermore, it can be worn without issue even with a thick coat in winter. The neck area uses neoprene material, which is soft and elastic, and also excellent in moisture retention and waterproofing. Unfortunately, this product has not obtained type approval from the Ministry of Land, Infrastructure, Transport and Tourism of Japan. Since there is no "Sakura Mark", it cannot be used for ship inspections. Please refrain from using it on boats. Suitable for fishing, river play, rafting, canoeing, tsunamis, typhoons, etc. Please rest assured. Although it is new, it has been stored at home and is a used item, so please only purchase if you understand this.