Between day and night is twilight, or… maybe it is a love story about vampires.  Regardless, between running.. and er.. sitting is the Nike Twilight Runner.  Never before has the most popular details of the Air Triax Structure, Air Stab and Pegasus come together so effortlessly that if your foot was blind and slide inside, it wouldn’t notice the seamless transition from an AM90 to this joint.  Available at Size?.