This design is a classic.

Each size has 2 inside compartments.

Available in tan or charcoal chocolate

Large size also has outside back phone pocket.

Dimensions: 

Small; width18cm x height 20cm x depth 3cm 

Medium; width 23cm x height 25cm x depth 4cm

Large; width 26cm x height 29cm x depth 4cm

Magnetic clip under lid to fasten.

Adjustable strap with unique ring buckle.

Moveable shoulder pad on medium size.