This multi-functional children's travel neck support U-shaped pillow, designed specifically for children, features a unique U-shaped design that perfectly fits the curve of a child's neck, effectively reducing neck fatigue caused by long hours of sitting in a car or on a plane. The use of knitted cotton in this U-shaped pillow helps maintain dryness and comfort inside, preventing discomfort caused by sweating during travel or extended wear. Knitted cotton material typically offers good durability and ease of cleaning, thereby increasing the longevity and practicality of the U-shaped pillow. The buckle design allows for easy adjustment of the pillow's size to accommodate different users' neck sizes and comfort needs. Whether for adults or children, they can quickly adjust the size of the U-shaped pillow according to their needs, ensuring a snug fit around the neck and providing better support.