This is a size SMALL. Please check product page for detailed specifications and dimensions. https://www.revelatedesigns.com/index.cfm/store.catalog/frame-bags/Ripio -- From Revelate Design's website: If miles upon miles of open dirt roads are your calling, the Ripio® frame bag will haul your stuff. The Ripio is the full-frame solution for your road, gravel or touring bike. With geometry optimized for frames with tall top tubes & head tubes, the Ripio fits a huge range of bikes and is packed with features that make use of the larger frame space road geometry provides.