Premium Material: Comfortable and Breathable - The sensory compression vest is made of neoprene material. The breathable mesh on the front, back, and sides ensures it can be comfortably worn without getting too hot.Removable Weights: The weighted vest for kids comes with 6 removable weight bags totaling 3 pounds; 4x0.375 pounds in the front and 2x0.75 pounds on the back of the vest. Adjustable Size: Fully adjustable shoulder straps of the compression vest fit a variety of potential sizes and provide room for growth. The shoulder straps allow for 1 inch in length while side straps allow for 5-6 inches in width.Easy To Wear: The weighted adjustable compression vest is easy to take on and off, suitable for both boys and girls.Package Includes: Each package includes with 1 Compression Vest for kids. Specification: Material: Neoprene Size Chart: S:35.5cmx50.8cm/13.98inchx20.00inchM:43cmx76cm/16.93inchx29.92inch Package Includes: 1 Weighted Vest for Kids Note: Please allow slightly errors due to manual measurement and different monitors.