【More process perfect】The frame design after the multi-layer process, equipped with anti-collision safety materials, and the impact absorption angle structure can disperse severe impacts. 【More ergonomic】Ergonomic handle with non-slip grip design and high-quality material coating for comfortable and sweat-proof grip without causing calluses. 【More High-quality material】Made of unique high-quality rubber material that is smooth, non-slip, easy to clean, safe, non-toxic, and odorless. 【Solid cast iron】Solid cast iron core enhances durability, toughness, and stability for repeated use without breaking or bending, providing a secure and stable weightlifting experience. 【Easy to store】Upgraded hexagonal dumbbell head design for easy storage and placement anywhere without worrying about rolling or taking up too much space, making it convenient to incorporate weights into your weightlifting routine.