Features: 360 Circular Opening: Items can be placed inside the waist bag and the 360 circular opening makes it easy to retrieve items with one hand during running. High Elasticity: High elasticity lightweight waist pack does not cramp the waist comfortable to wear and does not shake when running. Comfortable and Breathable: This waist bag is made of nylon which is comfortable and breathable to wear without holding sweat. Invisible Waist Bag: Seamless fit to the waist invisible waist bag with large capacity for daily outdoor items.Suitable for activities such as running traveling cycling etc. After-sales Service: If you have any problem please contact us immediately we will help you solve it as soon as possible. Specifications: Material: Nylon Size Perimeter(cm) Suggested Boys Weight(kg) SuggestedGirls Weight(kg) S 58 50-65 40-55 M 61 65-75 55-65 L 66 75-95 65-80 Notes: Please note that due to the influence of light and screen slight chromatic aberration is acceptable. Please allow slight measurement error due to manual measurement. includes: 1 * Waist Bag