Lightweight backpack material: wear it on the waist, skin-friendly, no stains, light, breathable and close to the body, not tied and bulky; It can prevent the items from bouncing during exercise. Large capacity and large space: Large capacity and multi-pocket design, can accommodate a kettle with a diameter of about 7.5cm, various kinds of mobile phones and small items. Easy access, neat and tidy. Water-Repellent Material: It can effectively block perspiration penetration during sports while ensuring all your items stay dry in rain, mud, sleet and snow. Reflective material: It is safer to run at night and reflect light. Suitable for different waist sizes: The waistband is designed with elastic, which makes the waist stable, wear-resistant and anti-wrinkle. The waist circumference is 70-100 cm. Trendy and stylish design. Comes with Headphone Jack: It is convenient for running/sports/fitness to wear headphones, say goodbye to clutter and enjoy music without worry. Suitable for all types of exercise, including walking, running, hiking, cycling, gym workouts, etc.