Constructed from 1000D nylon 3M reflective strip Expandable main compartment (Medium and Large models) Includes rain cover (not included with Micro) QuickClick seat mounting system with velcro seatpost strap Quick Release 6.5x4.1x4.8 (MD)` 58-76 c.i. Black Small (1-100 c.i.)UPC/EAN/GTIN: 883466004665