I'm surprised some of you experienced the heel slipping. Koston 1 was the first and only Nike that I skated, and it was mostly due to the heel lock. Before that shoe, I was in an ankle brace for 2+ years, and with the Koston I didn't need the brace anymore. Total game changer for me. I skated that shoe exclusively for four years. The mid was sick too. That being said, I'm glad I dont have a swoosh on my shoes anymore.