SKU: 17088


The Adjustable Backpack B3 is a small, medium and large backpack all in one. Using the same adjusting mechanism as our classic A10, B3 has the ability to transition between 31L, 46.5L, and a 62L capacities, making it the only backpack you need. There is no other backpack in the world with this size versatility.

Focusing on being a great overall backpack, B3 is equipped with great features such as being water resistant, durable, having a removable waist belt and side compression straps. Following Piorama's design integrity, B3 redefines simplicity and functionality. 


  • Capacity - 25L (side straps compressed), 31L, 46.6L, 62L
  • Water-resistant (against short periods of light rain and splashing water)
  • 2 exterior zip pockets, 2 interior zip pockets
  • Laptop compartment (Fits up to 15.3")
  • Safety side pocket
  • Quick access front strap zip pocket
  • Lockable main compartment zipper
  • Removable hip belt
  • Padded shoulder straps with sternum strap 


  • Small / 31x31x41cm
  • Medium / 31x31x61.5 cm 
  • Large / 31x31x82 cm
  • 1.35kg, 2.9lbs (w/ additional 300g, 10.5oz removable hip belt)


  • 900D nylon with PU coating
  • 210D polyester lining
  • Extremely light and durable Duraflex ABS hardware
  • Waterproof SBS zippers
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