This vest was designed for maximum comfort while engineered to maximize the benefit from any exercise. In fact, it’s so comfortable you might not even remember you’re wearing it. It is perfect for enhancing the cardio and muscle toning benefits from your in-home gym equipment, personal trainer or prescribed sport-specific training regimen. Unlike other weighted vests, it will not shift or chafe. Weights can be added in small increments allowing you to evolve your workout routine comfortably and safely. Professional trainers and conditioning coaches highly recommend the Power Weighted Vest. Package includes: Unisex Vest & 24 - 127.6 g Zinc Coated, Cast Iron Weights.