In reference to the Sidi Fusion Lei Boots, these are actually based off the men’s Fusion boot not the Vertigo.

The Fusion Lei is not the women’s equivalent to the Vertigo.

A couple other things that Scott Chikuami, Associate Marketing Manager at MotoNation suggested to me regarding increasing the comfort of the Sidis for a long workday:

1.)    Unzip the boots so there is only about an inch to half an inch of the of the boot still zippered shut (like you would with ski or snowboard boots) when walking about. It will all for a greater range of motion and let your feet breath more.

2.)    There is a removable instep that had a mild adhesive on it where it attached to the boot, replace that instep with an aftermarket instep like a Dr. Scholl’s – be weary of the thickness of the instep though as the thicker the instep the more comfortable usually, but you will start to eat up some Real Estate in the boot.