This perennial favorite for overpronators with medium to low arches continues to offer a superb blend of plush cushioning with steady-as-she-goes support and very comfortable fit.

Rob's Review:

Summary:
The 2150 is Asics’ most popular shoe because it fits a lot of different feet and offers an excellent blend of cushioning and stability. The Solyte midsole and famous Gel cushioning system ensure that this shoe will endure miles of pounding on the roads, treadmill, or light trails. Asics’ Impact Guidance System bolstered by the Duomax medial post will provide enough stability for mild overpronators without getting in the way of the heel-to-toe transition. Winter Shoe Guide 2010 winner of Runner's World Editor's Choice award.

Changes:
The 2150 fits snugger through heel and arch and it wraps these areas better without being annoying. Since the 2140 was a little roomier in the heel and arch, it sometimes allowed the foot to move around inside the shoe. For some people this meant they needed to go up a half-size to accommodate the extra motion. However with the snugger fit the 2150 fits true to size.

Upgrade to the new improved
Asics 2150
here:

Stick with your
Asics 2140 at great savings here: