Used for three weeks after purchasing here. Home cleaned. Suitable for toddlers and children in the first and second grades of elementary school. *Recommended age: 4-8 years old (See photo 7) ○ Reflective material for safety Reflective material is used on the shoulder pads and the edges of the main body, providing peace of mind on the way home from cram school or school. ○ Large pockets Large pockets on both sides for handkerchiefs and tissues. ○ Left/Right compatible Easily adjustable for left or right use by changing the buckle direction, and the belt length is also easily adjustable. ○ Lightweight and comfortable Made of lightweight and breathable material for all seasons. The shoulder pads are made of 6mm thick mesh material to reduce shoulder strain during prolonged use. Instruction manual included. 【Important Notes】 This product is not a medical device. It is not intended for the treatment of injuries or for medical purposes. If you feel any abnormality, discontinue use and consult a doctor immediately. Also, please be aware of color transfer to clothing. This product may cause color fading or color transfer due to the nature of the fabric when wet or used with wet items.