I bought mine less than a year ago. The main compartment is still curved, I can imagine the 24l version to be too small. Any laptop larger than 12" might get an

I bought mine less than a year ago. The main compartment is still curved, I can imagine the 24l version to be too small. Any laptop larger than 12" might get an issue also in the 26l version. I have a similar experience with water bottles: a typical 1 litre aluminium bottle (e.g. Sigg) hardly fits in the side pocket, so it's always a struggle to squeeze it. Once it's in the pocket, though, the risk of falling out is nil :)