Enertor, the Arizona-based orthotics brand, has signed a new agreement with Human Race to become the official insole partner of Human Race Events for the 2017 season. The deal covers 12 running and triathlon events including the Cancer Research UK Winter Run Series and Windsor Triathlon, which attracted a total of more than 33,000 participants last year. Enertor's insole, which is endorsed by Usain Bolt, uses expanding shock absorption to reduce injuries. The brand will be present at various Human Race events, where it will offer demonstrations of its insole technology, prizes and competitions for the wider Human Race community.