Numerous and practical applications of rubber hex dumbbells. The rubber-coated surfaces of the dumbbells are non-slip and will have to be redone often when hands are sweaty. This means that it is safe and effective for bodybuilding. As well as being a poor conductor of heat, rubber is also very tough stuff. The metal plates used in conjunction with its base provide an almost unimaginable weight distribution; this continues regardless of heavy use over time without showing signs for look like normal wear and tear They last, saving you money over the longer term. Another winning point: Hexagon-shapes (hex) also gives the dumbbells stability. This prevents them from rolling away on their own--potentially causing injury, or even stopping your exercise routine altogether. And lastly, the versatility of rubber Hex dumbbells make them usable for a variety of exercises--since you can effectively target multiple muscle groups at once.