I believe this is the midi sized but I could be wrong. This bag is well loved! Please look at the pictures before buying! Width (base): 10.5” or 27 cm Width (top): 13.25” or 34 cm Height: 8.75” or 22 cm Depth: 5.75” or 15 cm Drop Handle: 2.25” or 6 cm Adjustable Straps: 16”-21” or 41-53 cm Weight: 2.53 lbs or 1.15 kg Up to 11" laptop Up to 10.9" tablet A4 notebook