If you like to travel light bringing just the bare necessities you can opt for the Wallet L or Fanny pack. The first is quite think as well so you will be able to carry around your cards, money and keys. The Fanny pack instead has more space and it's divided in 3 sections. Ideal to fit your phone, keys, tissues and a small wallet/ card holder.
The Knapsack bag, the circle bag and the Z.W. Handbag have a big compartment to bring around also an umbrella, a waterbottle a scarf...for those who always want to be ready! Just in case...opt for bigger bags!