Used once! Lots of pockets and space! Ended up getting duplicates of the same bag. Wonderful backpack! Water Repellant Fabric Measurements: Dimensions: 27cm x 16.5cm x 45cm (10.5" x 6.5" x 17.7") Volume: 21L Product Features: Strategically placed front loops let you customize capacity as you clip the bag shut Exterior zippered pockets to secure your valuables Side pockets for quick access to water bottle and small items Removable, adjustable sternum strap Interior pockets keep you organized and your sweaty gear separate Interior padded pocket fits a 16" laptop