A dual zipper boot construction provides an enhanced comfort-fit for a user and a ready adaptation of the boot to a variety different calf shapes without stressing the boot stitching. A first full-length zipper allows the users to easily slide the boot on while a second mid-length zipper is in an open condition thereby providing additional space. Securing the first full-length zipper secures the boot in position. After the boot is secured in position, the user zips the second mid-length zipper to an optimal comfort-fit position on their calf. Optional elastomeric bridges between the zipper edges of the mid-length zipper allow the boot to accommodate partially zipped uses without disclosing the user's calf and while providing an enhanced style appearance.