This is a single item for sale, opened from a product purchased at Costco. It is new and unused. It is the new package version. The box is not included. Product Description ・Perfect for travel and outings. ・Can be used in rental cars, taxis, and buses. Easy to remove, so it won't get in the way of the back seat. ・Adjustable to fit the child's size, eliminating the need to buy a new one as the child grows. ・Convenient, comfortable, and very practical product. ★ The Smart Kid Belt is a portable child seat belt developed in Poland, certified for safety after rigorous crash tests according to EU and US standards, and recognized as E-mark compliant in Japan. It is the only portable child seat belt of its kind in the world. Its innovative shape makes it highly portable, and it can be used in various locations, such as rental cars and taxis while traveling. The product weighs only 120g. Unlike conventional child seats, it doesn't take up much space, allowing three children to be seated in the back seat. ★ Meets European and US safety standards This portable child seat belt has passed the crash tests of EU ECE R44 04 / US FMVSS 213 and has been approved for safety standards. ★ Innovative shape Weighing only 120g. It is highly portable and easy to attach and detach. It's pocket-sized, so you can take it out and put it on whenever you need it, such as when riding in a taxi or when there are unexpected passengers. ★ Compatible with all vehicles Usable in all vehicles equipped with seat belts. It doesn't sacrifice ride comfort or interior space because it doesn't require a large seat. 【Specifications】 * Applicable weight: 15kg～36kg * Applicable age: 3 years old～12 years old * Product weight: Approximately 120g * Usage position: Rear seat * Safety standards E-mark compliant (Japan) Compliant with Article 71-3, Paragraph 3 of the Road Traffic Law Attachment method: Seat belt fixation Smart Kid Belt