Strengths: These are so light (215g in size 7) that you feel fast, and are faster, running in them. The Axeler spring certainly works on your mind. Great durability, with not much wear either on sole or midsole in over eight 10k races, a marathon and several long and medium sized training runs.
Weaknesses: The fit is not perfect for me and I get blisters wearing them (though I've never had pain DURING 10k or marathon races). The tongue in so insubstantial that is is hard not to get is screwed up under the laces.
Overall: If they fit for you then they work at good racing flats.
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