VERSATILE: This chest bag for men is not only can be a sports treasure bag of workout to store your essential, but also functions as an anti-theft front chest pack, keeping your phone and wallet in crowded areas..COMFORTABLE FIT: Fully adjustable straps and the contour design of the running chest pack is ergonomic, allowing the running vest to fit more closely to the body reducing bounce and movement during intense activities..BREATHABLE DESIGN: The back of the chest bags are crafted with soft and breathable mesh, minimizing stuffiness during running. Plus, the padded design ensures comfort even when sweaty.. Material: The men's workout chest vest boasts good water-resistant nylon for extra durability. Reflective materials on both front and back ensure visibility and during night runs..Suitable FOR ANY ACTIVITY: Measuring at 47 inches, this sleek sports utility pack is bigger than a running belt and ideal for activities such as fishing, skiing, hiking, cycling, and marathons.