Description: Material: This children's swimming vest is made of 3D material and foam, ensuring it is thick, soft, and sturdy. There's no need for inflation, making it ready to use right out of the box.Adjustable Design: Featuring a locked socket design, the bust size can be adjusted to fit children aged 3 years old to 6 years old. The arm circumference ranges from 18cm to 32cm while the chest circumference ranges from 50cm to 63cm.Reliable: Our swimming vest provides a safe and reliable solution for your child's swimming needs. It serves as a good tool for children learning how to swimming.Detachable: The swimming vest is detachable and can be worn in three different ways - as a swimming vest with arm loops; as a standalone vest; or just the arm loops This versatility caters to various needs and preferences of your child.Wide Application: Ideal for various water activities such as swimming, beach floats, pool parties, bathtub, lakes or oceans adventures etc. Specification: Material:3D Material and foam Size Chart: Arm circumference: 18cm to 32cm/7.09inch to 12.60inchChest circumference: 50cm to 63cm/19.69inch to 24.80inchFit children aged 3 years old to 6 years old Package Includes: 1 Swimming vest set Note: Please allow slightly errors 1-2cm differences due to manual measurement.