Great shoe but for the first time with Brooks not true to size

These are great shoes for distance training but for the first time EVER with Brooks they do not fit true to size. I am generally a 9.5 in women's but have for no less than 20 different varieties and pairs of Brooks running shoes worn a 10. This shoe swallows my feet so much so that my kid could ride in the back of them. I cannot believe that this is normal for my favorite running shoe company. Perhaps I got a mislabeled pair. That seems highly unlikely but I can think of no other explanation.

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