- Size: 43.5 EU Technical fabric upper: wraps the foot with a soft feel while enhancing breathability. At least 75% of the main upper part of the shoe is made from recycled material to reduce waste and carbon emissions: The insole is manufactured using the solution dyeing process, which reduces water consumption by approximately 33% and CO2 emissions by approximately 45% compared to traditional dyeing technology: PureGEL technology: provides lightweight cushioning and softer landings