I am a fan of box calf bags. My feet are temperamental. Some summers, I swear orans (in box calf) which are supposed to conform to the foot, are suddenly uncomfortable. Other summers, they are fine. No idea why. It takes me a while to break in box calf orans. The leather is a bit thicker ans chewier. You would think the epsom wouls be stiffer, but they are not. They are relative,y pliable, and they somehow stick less to the feet on a hot summer day. So, in a real sense, I think they are cooler. (Hope that is not too much info). I think they run a hairs breath larger, but not enough to make a difference. I chalk this up to them being slightly thinner leather. I have both. Epsom is pretty sturdy too. (I learned this when I spilled an inch of carbonated water in my 25B sellier and walked hime unknowing. Apparently the bag is water tight and dried with pout a fuss when I put it over a wine bottle up side down. So you could say I am a recent convert to epsom lol.
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