I've been true with the Nano's for 6 years or so. I usually love them! These X1's have terrible arch support. I've never had arch pain in my life... until I met the Nano X1. They looks great and I get plenty of compliments. I hate them. I'm actually about to purchase the 2.0 after this review. The durability is great. Uncomfortable for sprints. I am not a fan of the raised heel either. It's higher than previous Nano's. If I want the lift, I'll put on my lifters. It's not really that much more versatile. If I could, I'd return these shoes.
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