An article of footwear may include a motorized tensioning system. The tensioning system may include a tensile member and a motorized tightening device configured to apply tension in the tensile member to adjust the size of an internal void defined by the article of footwear. The tensioning system may further include a power source configured to supply power to the motorized tightening device. The tensile member, the motorized tightening device, and the power source may be configured to be removably attached to the article of footwear.

An article of footwear includes a medial portion, a lateral portion, a plurality of first lace-receiving members on the medial portion, and a plurality of second lace-receiving members on the lateral portion. The first and second lace-receiving members are movable along the respective medial and lateral portions from a first position to a second position.

A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. In an example, the sensor system includes a capacitive or magnetic sensor configured to sense changes in a body's proximity to the sensor in footwear. Characteristics of the sensed proximity can be used to update an automated footwear function, such as an automatic lacing function, or can be used to determine a step count, foot strike force, a rate of travel, or other information about a foot or about the footwear.

An article of footwear with various types of guide elements is disclosed. The article of footwear provides a set of tensile elements that can be moved through the guide elements to switch between a loosened and tightened position of the upper. The tensile elements may be routed through a guide element associated with the upper that can provide compressive strength and support.

An article of footwear can include a ferromagnetic body disposed in the article, and a magnetometer to measure a strength or direction of a magnetic field that is influenced by a position of the ferromagnetic body. One of the ferromagnetic body and the magnetometer can be configured to move relative to the other one of the ferromagnetic body and the magnetometer, for example according to movement of a foot in the article. In an example, the ferromagnetic body is disposed in a compressible insole and the ferromagnetic body moves in response to compression or relaxation of the insole. The magnetometer can be disposed in a platform or sole portion of the article that is relatively stationary compared to the ferromagnetic body. Rate of change information about the magnetic field can be used to control article functions or to provide information about a foot strike or step rate.

A fastener device includes a first fastener part and a second fastener part which can be mounted on one another along a closing direction, are held against one another in a closed position, and are releasable from one another in order to open the fastener device. The second fastener part has an actuating element with a first engagement means and has a winding element which is arranged on the actuating element and which is rotatable in a winding direction in order to wind up a tension element and which has a second engagement means. The first and the second engagement means, in a release position, are not in engagement with one another, such that the winding element is rotatable relative to the actuating element, and can be placed in engagement with one another, such that, in an engagement position, the winding element is rotatable by means of the actuating element.

A rapid-entry shoe allows the shoe to be rapidly entered and readied for wearing by the user. The shoe may be any of a wide variety of shoe types, including shoes of a wide variety of styles and functions. The rapid entry features of the shoes utilize various movable elements that are attached to a sole portion or other portion of the shoe and allow movement of a portion of the shoe under pressure to allow rapid entry of the user's foot into the shoe. The moveable elements may include flexible elements, elements having constructed to have a memory of a native position, magnetic elements, and/or elastic elements

An article of footwear includes an upper defining an opening for receiving a foot of a wearer and a sole structure affixed to an under side of the upper. The upper has a throat opening provided between a medial side of the upper and a lateral side, and further includes a forward portion for receiving a forefoot of the foot, a rearward portion for receiving a heel of the foot, and an intermediate portion between the forward portion and the rearward portion. The intermediate portion comprises a reactive material extending between the sole structure and the throat opening on both the medial side and on the lateral side of the upper. The reactive material has a negative Poisson's ratio and is bounded on either side by materials that have a positive Poisson's ratio.

A fastener having two strap ends connected by an elastomeric member is described. The elastomeric member has sufficient elasticity to allow a user to increase the distance of separation between the two strap ends by applying a separation force, while providing enough tension to return the two strap ends to close proximity when the user releases the separation force. The elastomeric member may also have an adjustable elasticity to accommodate different applications with different load forces. The two strap ends may each be attached to two connectors.

Universal shoe fastening systems in accordance with embodiments of the invention are provided. In one embodiment, a shoe fastening system for a shoe includes an anchoring strap-clip configured to attach to a first pair of eyelets of the shoe, an adjustment strap-clip configured to attach to a second pair of eyelets of the shoe, and a strap closure that includes an anchoring end portion configured to attach the anchoring strap-clip, an adjustable end portion configured to traverse under a bar region of the adjustment strap-clip that allows for the shoe to be fasten, and a fastening portion configured to connect the anchoring end portion with the adjustable end portion.