The Giant Defy has made major steps forward as, with its Advanced SL frame, its top model weighs almost 300 grams less than before, now reaching a weight 20% less than its predecessor. For comfort, Giant still employs the D-Fuse seat post but redesigned it in such a way that it has greater compliance. They also developed a new bar/stem combo that purports to be compliant in the downward direction but stiffer in the upward direction. The bike also has a larger tire size limit as it can now take tires as wide as 38 mm, which helps to improve the overall comfort.