This invention provides a negative ion generator and a negative ion functional hat, and the negative ion generator is connected in series with a power regulation module. Through the control of a power control device to the power regulation module, the number of negative ions generated by a negative ion generation module is regulated. The negative ion functional hat provided by this invention is provided with the above-mentioned negative ion generator. Negative ion emission power can be regulated in conjunction with an active state of a human body, thereby allowing negative ion emission amount to be adapted to actual human body demand.

A headwear device for securing articles includes a crown; a plurality of panels coupled together adjacently thereby to collectively form the crown; a visor attached to the crown; at least one two-ply panel disposed within the crown portion of the headwear device as a portion of the plurality of panels coupled together adjacently; and at least one aperture defined within the at least one two-ply panel thereby to form an entry point to an interior portion of the at least one two-ply panel.

Interactive therapeutic devices for wear on a head of a user are provided herein, along with kits including the interactive therapeutic device and an activity book, and methods of using the devices and kits. Contemplated devices comprise a set of attachment points that removably couple with a set of patches via fastener components. The patches can include various types of patches that provide different benefits to the wearer, including style, a scent, a noise, a tactile sensation, protection, and/or the ability to better communicate a feeling and/or a need.

Interactive therapeutic devices for wear on a head of a user are provided herein, along with kits including the interactive therapeutic device and an activity book, and methods of using the devices and kits. Contemplated devices comprise a set of attachment points that removably couple with a set of patches via fastener components. The patches can include various types of patches that provide different benefits to the wearer, including style, a scent, a noise, a tactile sensation, protection, and/or the ability to better communicate a feeling and/or a need.

A self-sizing baseball cap has a visor, a crown, and a hem around the bottom edge of the crown. Within the hem is an elastic band stitched in place, while a slidable woven band is separately stitched to the elastic band. The elastic bands are anchored within the hem that are then stitched to the woven band in order to secure the woven band to the baseball cap. The woven band extends outside the hem across the bottom of a semicircular opening on the back of the crown. The woven band's ability to slide allows the opening to deform in order to allow the cap to accommodate the shape and size of the wearer's head. The elastic bands hold the cap snugly against the wearer's head when in place. Thus, the cap automatically resizes to fit the wearer's head.

A self-sizing baseball cap has a visor, a crown, and a hem around the bottom edge of the crown. Within the hem is an elastic band stitched in place, while a slidable woven band is separately stitched to the elastic band. The elastic bands are anchored within the hem that are then stitched to the woven band in order to secure the woven band to the baseball cap. The woven band extends outside the hem across the bottom of a semicircular opening on the back of the crown. The woven band's ability to slide allows the opening to deform in order to allow the cap to accommodate the shape and size of the wearer's head. The elastic bands hold the cap snugly against the wearer's head when in place. Thus, the cap automatically resizes to fit the wearer's head.

An interface is provided for the comfortable and secure positioning of a hat on the head of an animal such as a dog. The device features a body having a bottom section adapted to engage the head of the animal and an exterior fastened or engageable with the interior of a hat. Recesses in the body align with openings in the hat to provide a pathway for the ears of the animal therethrough. The body provides the hat with a rigid structure to maintain its shape on the animal's head. A strap is engageable around the neck of the animal and to the body or hat on opposing sides, to hold the body engaged with the hat on the head of the animal in an as-used position.

A hat structure contains: a body on which a protective layer is formed, at least one mesh bag, a heating element, and an isolation sheet. The at least one mesh bag is arranged inside the protective layer, the heating element is accommodated in each of the at least one mesh bag, and the isolation sheet is fixed on each mesh bag and is configured to contact user's head.

A baseball cap and method of assembling thereof is provided. The cap includes a crown that is formed from a single sheet or single piece of stretchable fabric, such as using heat pressing techniques. The cap further includes a support layer, such as made from buckram, which is attached to an interior, front portion of the crown, and a visor and a band which are attached to the crown. The crown has a hemispherical shape. In one example, the crown can include a back portion thereof which has been removed to form an open area across which an adjuster is attached. In another example, a front portion of the single-panel crown can be removed and replaced with a front panel made of a different material to form a modified crown.

A baseball cap and method of assembling thereof is provided. The cap includes a crown that is formed from a single sheet or single piece of stretchable fabric, such as using heat pressing techniques. The cap further includes a support layer, such as made from buckram, which is attached to an interior, front portion of the crown, and a visor and a band which are attached to the crown. The crown has a hemispherical shape. In one example, the crown can include a back portion thereof which has been removed to form an open area across which an adjuster is attached. In another example, a front portion of the single-panel crown can be removed and replaced with a front panel made of a different material to form a modified crown.