The shoe is a bit narrower but this works fine if I use a 13 wide versus my 12.5 reg in a Glycerin Max. I also like the new Glycerin 22 in 13s and prefer the non GTS version. The new Ghost takes the foam and spring from the Glycerin and has much more bounce than the 16s have and the heel to toe flow is more stable, imo. Stability is improved, lighter, looks better from the side view. It is important to order up and possibly wider to get the room needed with this new shape. I like to alternate between Glycerin, Glycerin Max, Ghost 17 and Addiction (stability) depending on use - I rarely wear the same shoe all day. The Ghosts are a new favorite after having pushed the to the back of the closet - they are out now!
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