Durable and water-resistant rear bike bag designed for the Engwe M20 and similar e-bikes. Available in 7 L trunk or 17–35 L expandable pannier options. Made with abrasion-resistant polyester, reinforced with internal padding or frames, and includes reflective strips for visibility. Features secure Velcro or strap-based mounting, with optional MIK adapter compatibility for added stability. Ideal for commuting, touring, or all-weather storage.