WATERFLY Running Belt Fanny Pack: Runner Marathon Jogging Waist Pack Sport Workout Exercise Fitness Phone Holder Belt for Men Women Jogger Slim Waistband

WATERFLY ENJOY YOUR LIFE We focal on outdoor bags. The best quality is our culture.  To meet the demand for durability and comfort WATERFLY designed this high-capacity daily waist bag by using hard-wearing nylon materials and high-quality accessories to improve the durability and combining ergonomics to improve wearing comfort. We take them in the outdoor with other users to make sure that they are comfortable and durable. We go to many trails parks and moutains in all weather conditions to received good feedback. We carry out several tests to validate the sling bag's components: fabric  buckles  straps  zips. For example for a fabric we test the resistance to abrasion and tearing colour fastness when exposed to UV light and washing and waterproofing. We also conduct tests to check the resistance of assembly using a dummy that reproduces the movements of a user to replicate several years of wear and tear on the sling bag