Colours: Tech Grey/Electricity/Matte Silver. The dream scenario: The more energy you pour into your run, the more energy your running shoes flood back into your stride. These men's Sonic Boost runners make it happen because of their unique cellular midsole made up of tiny capsules, a design that allows for more energy to be absorbed and released at a more consistent rate. The result: more power, more comfort, mile after mile after mile. Featuring a breezy mesh upper with supportive welded overlays and an external heel counter for increased stability. Weight: 223 g (size UK 5.5) Mesh upper with welded overlays for support boost(TM)'s energy-returning midsole keeps every step charged with an endless supply of light, fast energy TORSION´┐Ż provides adaptive midfoot support; miCoach compatible DUAL DENSITY external heel counter for added stability ADIWEAR(TM) outsole offers the ultimate in high-wear durability