This resource provides a practical guide for investors and companies to understand and track the Gender Smart Investing Metrics. These metrics align the 2X Challenge and IRIS+ to drive consistency in reporting and evaluation. The resource provides recommendations for reporting on these indicators across a portfolio, requirements for qualifying for the 2X Challenge under each metric, any differences with IRIS, and timing for data collection by investor type. The final sections of the resource provide direct guidance on how to apply the metrics based on investor type: direct debt or equity, financial institutions (both in the institution itself or investments through the institution in order to target specific groups), and funds (both at the GP/Fund level and in the fund's portfolio).