Both products are available in An array of measurements, colorways and elements, although the Kelly has higher wide range, while the Birkin remains a little additional exclusive.  The Hermès Kelly Sellier, the bag's authentic style, pays homage for the model's equestrian heritage with its title, "Sellier," indicating saddler in French. https://jaspernhymz.ageeksblog.com/33856537/used-birkin-for-sale-fundamentals-explained