Have you read the book How to be a Parisian? I loved it and it inspired me on the crossbody bags collection. With the bag which is made in minimalistic and simple way but is still glamorous and elegant you'll feel like one.
It seems like this is the perfect bag: handmade from genuine Italian vegetable tanned leather, big enough for all the most important things you always need to have with you and most importantly - it's timeless. You can buy it now and wear for ages. The bag will even become more beautiful because leather is a natural material that shows its wear nicely over time which gives your bag a special character.
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