LT I:
http://www.runningwarehouse.com/descpageMRS-NSTLTM1.html
LT II:
http://www.runningwarehouse.com/descpageMRS-NSLT2M2.html
Anyone know the major differences between the two. I plan to use them for summer tempos and longer intervals on the track... Is it worth waiting till July 11 for the LT IIs, and paying a little bit more.