Note - the elastic band of this vest should be positioned at the waist. Please carefully check the wearing direction in the picture. Iron pellets and metal stones - This weighted vest is filled with iron pellets and metal stones, not cheap river sand. Ergonomic design and balanced weight - This weighted vest distributes weight evenly throughout your body and features adjustable shoulder straps to prevent it from slipping off during exercise (weight is not adjustable). Comfortable material and convenient pockets - Our weighted vest is made of soft neoprene and features a mesh pocket on the back for adding extra weight. Even weight distribution - The vest has pockets in both the front and back for comfort during various workouts, preventing strain on your back or shoulders. Weight: 4.18 lbs