Under poor lighting conditions, it is difficult to distinguish whether multiple lights are attached to the same object or multiple objects, particularly when they are flashing. In some circumstances, lights flashing at different frequencies and/or with different periods may be presumed by other road users to be associated with different objects, thereby diminishing the value of multiple individual lights on a bicycle. Synchronized safety lighting enables a cyclist to synchronize multiple individual lights so that they may flash in unison with the same repeating pattern. This provides a stronger visual impression of a cyclist and their bicycle to other road users by visually tying the cyclist's lights together.

Under poor lighting conditions, it is difficult to distinguish whether multiple lights are attached to the same object or multiple objects, particularly when they are flashing. In some circumstances, lights flashing at different frequencies and/or with different periods may be presumed by other road users to be associated with different objects, thereby diminishing the value of multiple individual lights on a bicycle. Synchronized safety lighting enables a cyclist to synchronize multiple individual lights so that they may flash in unison with the same repeating pattern. This provides a stronger visual impression of a cyclist and their bicycle to other road users by visually tying the cyclist's lights together.

One or more aspects of the present disclosure provide articles of manufacture and components of articles that incorporate an optical element that imparts structural color to the component or the article. The component comprises a cured or curable material, and can include or be made to have a textured surface.

One or more aspects of the present disclosure are directed to components having an optical element that imparts structural color to the component or article. The present disclosure is also directed to articles of manufacture including the component having an optical element, and methods for making components and articles having an optical element that imparts structural color.

A backpack may include a first panel having a first panel surface facing in a direction and a second panel. The second panel has a second panel first surface and a second panel second surface opposite the second panel first surface. The second panel first surface is inconspicuous. The second panel is pivotable relative to the first panel between (1) a concealment position in which second panel second surface faces the first panel surface and (2) a safety position in which the second panel second surface faces in the. The backpack further includes a safety optic formed on one of the first panel surface and the second panel second surface.

A backpack may include a first panel having a first panel surface facing in a direction and a second panel. The second panel has a second panel first surface and a second panel second surface opposite the second panel first surface. The second panel first surface is inconspicuous. The second panel is pivotable relative to the first panel between (1) a concealment position in which second panel second surface faces the first panel surface and (2) a safety position in which the second panel second surface faces in the. The backpack further includes a safety optic formed on one of the first panel surface and the second panel second surface.

The invention relates to a fiber and a textile woven with the fiber, the fiber has two surfaces, a light-reflective layer and a luminescent layer respectively, and thus has light-reflective and luminescent functions. The functional fiber can be woven into a textile, or used as a sewing thread or an embroidery thread, so that apparels with the textile, the sewing thread or the embroidery thread have light-reflective and luminescent properties, making the apparels fashionable and capable of providing safety.

Aspects herein include a knit component having a non-reflective portion formed from a first knit segment that is knit with the first yarn and the second yarn in a plated relationship, where the first yarn forms the non-reflective portion on a technical face of the knit component. A reflective portion is formed from a second knit segment that is knit with the second yarn, where the second yarn forming the reflective portion is on the technical face of the knit component. The second knit segment is integrally knit with the first knit segment along the knit course.

A step triggered light up footwear device that creates a flash of one or more lights when a wearer moves or takes a step. The device includes a body with a battery holder, a battery, a manual switch, and a motion sensor. It includes a first light-emitting element, a second light-emitting element, and a control circuit connected to and powered by the battery. The control circuit is also connected to the first light-emitting element and the second light-emitting element, and may be further connected to receive inputs from the manual switch and the motion sensor, such that operation of the manual switch causes the control circuit to provide power to light the first light-emitting element for a first time period, and such that a motion sensed by the motion sensor causes the control circuit to provide power to light the second light-emitting element for a second time period.

A step triggered light up footwear device that creates a flash of one or more lights when a wearer moves or takes a step. The device includes a body with a battery holder, a battery, a manual switch, and a motion sensor. It includes a first light-emitting element, a second light-emitting element, and a control circuit connected to and powered by the battery. The control circuit is also connected to the first light-emitting element and the second light-emitting element, and may be further connected to receive inputs from the manual switch and the motion sensor, such that operation of the manual switch causes the control circuit to provide power to light the first light-emitting element for a first time period, and such that a motion sensed by the motion sensor causes the control circuit to provide power to light the second light-emitting element for a second time period.