Features: Airmesh breathable shoulder harnesses with a one-handed sternum strap buckle and hydration routing loops Breathable die-cut backpanel for comfort on the move Quick-Pull drawcord closure with a large reflective webbing puller Top zippered pocket with key clip and center buckle closure for secure organization Side stretch mesh pocket for water bottles and fast-grab storage Internal hydration sleeve with universal reservoir hanger and hydration port Custom Comfort-Grip molded zipper pulls Reflective webbing loops for enhanced visibility Available in both Standard and Plus Size fits; Plus Size fits comparable to 2x-6x apparel sizing while maintaining consistent torso sizing with other Gregory products