Today is unofficial Nike Free day here at Sneaker News. The Swoosh is celebrating ten years of that technology, a celebration that’s kind of culminated in today’s previews of upcoming Free styles, history pieces name checking spiritual successors to the technology, and the NIKEiD debut of a couple of new silhouettes. Now available on the platform are the Nike Free 4.0 Flyknit and the Nike Free 5.0, both of which can be built in “Hybrid” mode that keeps the same upper but introduces a different degree of Free for the bottoms. See a couple quick examples lined up after the break and then build your own set of Nike Frees at NIKEiD today.