XL High Visibility Tool Vest with Built in Hydration Pouch - Electricians, Surveyors, Contruction (Orange) 1280 D Nylon Made in USA and Imported Evenly distributes tool weight on the upper torso. Pocket on the back that will hold a 2 Liter hydration pouch. Built-in back support belt Designed for Construction Harness to be worn underneath vest Size adjustments to customize the vest from 40" - 60" around the chest.