Eight pounds of evenly packed iron sand make this body weight vest the approachable entry into loaded training, raising heart rate on walks and jogs without straining joints. The breathable neoprene construction contours to men and women through the adjustable buckle, and a reflective stripe adds low-light visibility on street runs. Storage pockets stash essentials while the snug 15.4 x 13.8 inch fit stays put through Hiit and cross training.