What are the Ironman Performance Gel Metatarsal Arch Cushions? The Ironman performance metatarsal gel arch cushions have been specifically designed to provide comfortable support to the arch, to help reduce the risk of injury. When can I use the Ironman Performance Gel Metatarsal Arch Cushions? Use the Ironman performance gel arch cushions to help provide support to the arch during a range of sporting activities. Please Note: Insoles & heel cups are exempt from the 30 day returns policy if they have been worn. How do the Ironman Performance Gel Metatarsal Arch Cushions Work? Featuring an antimicrobial top cloth to eliminate odour causing bacteria the Ironman performance metatarsal arch cushions work by absorbing impact & shock, which helps to prevent ankle injuries. By providing comfortable support to the arch these gel cushions improve the positioning of the foot which can reduce the strain on the ankle, knee, hip & back. One size fits all.