MOST COMFORTABLE highest quality fully adjustable metal weight vest includes 10 to 20 pounds of small thin steel weights flexible unlike plate carrier tactical vestzips on and off quickly for muscle building calorie burning workout at home or gym ADVANCED design based on Hyperwear patented technology hugs torso removing stress from shoulders and great for cardio training and weight loss with tiny 1/7 of one pound weights allowing total control so you can adjust to any weight 6, 8, 12, 16 etc THINNEST PROFILE with soft feel and comfort for a perfect athletic fit - the only workout vest that comes sized in small, medium, large and extra large for women, men and kids and can be invisible under a shirt with weighted vest weights inserts DURABLE Cordura nylon sleek black fabric keeps its shape with performance stretch, strong reflective YKK zipper, and colorful reflective orange elastic side laces for full fit adjustment creating an open mesh side to keep you feeling and looking cool International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.