The Everlast Weighted Vest is designed for strength training and conditioning to improve speed and power. Made of neoprene with built-in iron and sand weight filling featuring adjustable straps for the ideal fit and comfort. Exercising the body at a heavier weight than it is accustomed maximizes the effectiveness of your workout. Best results when worn during strength training, total body conditioning, boxing and fitness workouts. · Made with soft neoprene material for ultimate comfort and durability. · Built-in iron and sand weight filling · Features reflective tapes for use at night which makes night running safer. · Adjustable straps for a snug fit during exercises. · Ideal for strength and weight training. · Convenient pocket storage to store belongings on the back of the vest when exercising. · One size fits most Engineered for: Total Body Conditioning, Strength, and Cardio Workouts