Endorphin Running Belt Marathon Training and enhances the delivery of

and enhances the delivery of oxygen and vital nutrients to the calf muscles for optimal performance and recovery

Sternum strap with whistle buckle

Features a mid-profile and a hook and loop closure

48% poly fleece

Endorphin Running Belt Marathon Training and enhances the delivery ofThe Endorphin Running Belt was made to be your ultimate running companion. Light, secure, capable, and built to exceed expectations at every distance from 5k to 100 miles. Lightweight & Comfortable: Crafted from breathable, stretchable materials that conform to your body for a snug, bounce free fit. Adjustable Fit: An easily customizable waistband ensures a secure grip without pinching or digging, so you can move with confidence. Ample Storage: