• I agree with the other posters, that's enough weight that commuting that far will probably impact your back. Go for a saddle pack of some sort.

    The last non bag option I can think of that includes wearing your rapha top is to get a gilet (rapha, spexcel etc) to go on top of your PTJ - I wore mine bigxtop bag with my PTJ twice and it was very harsh on the material, would have probably eaten through it in 3 weeks of commuting. Although you might totally boil out.

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