Articles of footwear, including athletic footwear, may include: (a) an upper including an opening through which a leg of a wearer extends, wherein the upper includes a foot insertion opening extending rearwardly and downwardly from a front portion of the leg opening at least to a heel area of the upper; (b) a closure system for releasably closing the foot insertion opening and optionally tightening the shoe on the foot; and (c) a sole structure engaged with the upper. The foot insertion opening widely opens the side and/or rear area of the shoe to allow for easy insertion and removal of a foot. Such uppers can be particularly useful for hightop athletic footwear, boots, or other footwear that extends up to or at least partially over a wearer's ankles.

Footwear, including athletic footwear, opens very wide, e.g., by moving an ankle containing portion of a footwear upper laterally/sideways with respect to the sole structure or a base portion of the upper (e.g., rotate it to the lateral side). In effect, the ankle containing portion may move/rotate sideways with respect to the sole structure/base portion via a connecting member (e.g., moving akin to rotation on a hinge type structure) to open in somewhat of a clamshell fashion. The rear of the upper base portion in this open condition may appear somewhat as an open backed slipper or slide type shoe. These actions and features open the rear heel area of the upper wide and low to enable easy insertion of a foot into the interior chamber, generally from the rear of the footwear structure. One or more straps can be used to secure the upper to the foot.

Footwear, including athletic footwear, opens very wide, e.g., by moving an ankle containing portion of a footwear upper laterally/sideways with respect to the sole structure or a base portion of the upper (e.g., rotate it to the lateral side). In effect, the ankle containing portion may move/rotate sideways with respect to the sole structure/base portion via a connecting member (e.g., moving akin to rotation on a hinge type structure) to open in somewhat of a clamshell fashion. The rear of the upper base portion in this open condition may appear somewhat as an open backed slipper or slide type shoe. These actions and features open the rear heel area of the upper wide and low to enable easy insertion of a foot into the interior chamber, generally from the rear of the footwear structure. One or more straps can be used to secure the upper to the foot.

The present invention relates to a self-scalable casual footwear that allows involve two subsequent footwear sizes, comprising an upper of bi-elastic material (1) and a mono-elastic (2), a bi-material outsole (3) and a mounting insole (4). Such footwear does not require additional components to fit, such as laces, rubber bands, straps, velcro, zippers, hooks, eyelets or any other that is treated as a resource for the purpose of this invention.

Footwear, including athletic footwear, opens very wide, e.g., by moving an ankle containing portion of a footwear upper laterally/sideways with respect to the sole structure or a base portion of the upper (e.g., rotate it to the lateral side). In effect, the ankle containing portion may move/rotate sideways with respect to the sole structure/base portion via a connecting member (e.g., moving akin to rotation on a hinge type structure) to open in somewhat of a clamshell fashion. The rear of the upper base portion in this open condition may appear somewhat as an open backed slipper or slide type shoe. These actions and features open the rear heel area of the upper wide and low to enable easy insertion of a foot into the interior chamber, generally from the rear of the footwear structure. One or more straps can be used to secure the upper to the foot.