The Zelus Classic Series Fixed Weight Vest offers multiple weights from 6 to 30 lbs, filled with evenly distributed iron sand to add extra resistance to your daily routine. The unique X-shaped design ensures a stable, secure fit with greater mobility. Adjustable buckle straps provide a snug fit for different body types with chest sizes from 35" to 45". Made from soft, wear-resistant spandex, it includes an armband pouch, rear mesh pocket, and reflective strips for safer, more convenient yoga, jogging, or walking, helping you steadily improve your fitness.