Maximize your exercise routine and burn up to 70% more calories by adding resistance and weight to your core. Men and women of all ages and body types can use the weightvests to get in shape, lose weight, enhance fitness and improve their performance. Adjustable to fit any size torso. � Great for strength training, general fitness, weight loss � Safer and more effective than ankle/ wrist weights. � Studies show weight vests effectively improve spinal bone density. � 64 & 84lb Xvest used for training by police, firefighters, military etc.