roboto, the material of the bag will have a bearing on how much it makes you sweat. Plastic or vinyl bags would be the worst. Canvas would be the best at allowing moisture evaporation, whereas plastic and vinyl allow none, hence the sweaty back.
Either way, I think everyone would be relatively sweaty on their commute during the summer. A top thats good at wicking sweat, and a bag with moisture wicking abilities might be the best bet.
roboto, the material of the bag will have a bearing on how much it makes you sweat. Plastic or vinyl bags would be the worst. Canvas would be the best at allowing moisture evaporation, whereas plastic and vinyl allow none, hence the sweaty back.
Either way, I think everyone would be relatively sweaty on their commute during the summer. A top thats good at wicking sweat, and a bag with moisture wicking abilities might be the best bet.