Constructed from 1000D nylon3M reflective stripOne main compartment with inner mesh pockets (large and medium models are expandable)QuickClick (F25) seat mounting system with velcro seatpost strap QuickClick7.9x4.1x4.7` (MD)60-80 c.i.BlackSmall (1-100 c.i.)UPC/EAN/GTIN: 768661113872