It's all about size: 35 is big. It's the last size before jumping to travel bag size (40 and 50). Most laptops could fit in it even though some people recommend no to do it.

Features: padlock and "clochette".

Material tip: Togo leather (big grains) costs more than Swift (smooth) and Epson (fine grains) but Swift leather is making a comeback. Box leather (very smooth and glossy) is the iconic leather. Togo and Epsom and other grained leather tend to scratch less.

Sellier or retourné ? The Sellier is the classic Kelly. Structured, Boxy, formal. Retourné/relaxed/soft is more round, more casual.