Antivirus helmets and techniques to manufacture the antivirus helmets are provided. The antivirus helmets can protect subjects from viruses, bacteria, or other types of pathogens. The antivirus helmets can be modular and can isolate a subject wearing the antivirus helmets from the surrounding environment. The antivirus helmets can be deformable and can be worn during extended periods while protecting a subject wearing the antivirus helmet and other subjects in the environment surrounding the subject.

A guard to protect the neck of a person absorbs kinetic energy from an object that, if not for the guard, would strike the person's neck. The guard includes a body that has a material that deforms when an object strikes it, a shape configured to cover the posterior region of each of the cervical vertebrae of a person's spine when the guard is worn by a person to protect their neck, and a coupler to position and hold the body over the posterior region of each of the cervical vertebrae of a person's spine. The guard's body also includes a first region positioned above a person's first cervical vertebrae, when the guard is worn by a person to protect their neck, and a second region positioned above a person's last cervical vertebrae, when the guard is worn by a person to protect their neck.

An article of apparel includes at least one fabric panel including a first yarn having a first denier and a second yarn having a second denier. The first yarn forms an auxetic structure on the fabric panel comprising a pattern of interconnected segments defining cells, each cell having an interior area. The second yarn forms a fill portion extending between the interconnected segments of the auxetic structure and substantially fills the interior area of each cell.

A protective headgear device for shielding the user from sunlight including a hat having a brim with an outer portion and an inner portion; wherein the inner portion has at least two hat magnets embedded therein and two grommets with opening along said brim; and a single piece of fabric having two side portions, a headband portion and a fabric opening in the middle which fits over the top portion and including at least two fabric magnets embedded therein; where the side portions of the fabric fit through the grommet so that the fabric magnets attach to the hat magnets to secure the fabric across the user's face, neck and shoulders.

A comfortable construction helmet easy to assembly and adjust is revealed. The construction helmet includes a support frame mounted therein and a head cushion fixed on the support frame for allowing a user's forehead to abut against. Left and right straps are extended from two sides of the support frame while an adjustment assembly is disposed between the left and right straps for adjusting the length of the straps. The adjustment assembly includes a base, a rotating member mounted in the base, an outer cap, and a toothed disc arranged over the rotating member and positioned in the outer cap. Two connecting strip are extended from two sides of the rotating, member and connected to the left and right straps respectively. The toothed disc which is driven by the outer cap further drives the rotating member to rotate for changing the length of the connecting strips.

A helmet manufacturing method involves: producing a shell and a protector, the shell having two opposing cheek-protecting portions, the protector having a jaw-protecting portion and a neck-protecting portion connected to the jaw-protecting portion; putting the shell and the protector in a die such that bottom edges of the cheek-protecting portions of the shell connect to a top edge of the neck-protecting portion of the protector; introducing a foam material into the die, apply heat and pressure to the foam material such that the foam material expands and binds to an inner side of the shell and an inner side of the protector; and taking a helmet finished product out of the die. Therefore, both the jaw-protecting portion of the integrally-formed protector and the helmet finished product are reinforced.

Embodiments of the invention disclosed herein are directed to articles of clothing that allow for monitoring of different analytes (e.g., electrolytes and molecules) in human sweat during fitness activity, while training, or simply in everyday life. The clothing includes a sensor system completely integrated in textile such that every sensing part is made of textile fibers. The clothing is able to control, collect, analyze, and expel the sweat over time. The textile sensor allows a spontaneous absorption of body sweat directly from the skin, while it is produced, using the hydrophilic natural properties of the textile. Then, once adsorbed, the flux of sweat is controlled and guided through the textile using a gradient of the textile's hydrophilic properties. The sweat guided through the textile is analyzed through an electrochemical sensor woven into the textile. Finally, the sweat is collected in a reservoir and expelled for evaporation.

Embodiments of the invention disclosed herein are directed to articles of clothing that allow for monitoring of different analytes (e.g., electrolytes and molecules) in human sweat during fitness activity, while training, or simply in everyday life. The clothing includes a sensor system completely integrated in textile such that every sensing part is made of textile fibers. The clothing is able to control, collect, analyze, and expel the sweat over time. The textile sensor allows a spontaneous absorption of body sweat directly from the skin, while it is produced, using the hydrophilic natural properties of the textile. Then, once adsorbed, the flux of sweat is controlled and guided through the textile using a gradient of the textile's hydrophilic properties. The sweat guided through the textile is analyzed through an electrochemical sensor woven into the textile. Finally, the sweat is collected in a reservoir and expelled for evaporation.

A protective helmet having a protective shell, a low friction layer, and a comfort liner is disclosed. The protective shell includes an energy absorbing material and an inner surface. The low friction layer is coupled to the inner surface of the protective shell. The low friction layer may be plastic having a thickness of less than approximately 3 mm. The comfort liner is removably coupled to the low friction layer opposite the protective shell, and includes a low friction material, such as brushed nylon, adjacent the low friction liner. The comfort liner may be removably coupled protective shell with either clips that removably couple to receivers embedded in the brow of the helmet, with elastically deformable couplings that extend from the comfort liner to the protective shell, or both.

A protective helmet having a protective shell, a low friction layer, and a comfort liner is disclosed. The protective shell includes an energy absorbing material and an inner surface. The low friction layer is coupled to the inner surface of the protective shell. The low friction layer may be plastic having a thickness of less than approximately 3 mm. The comfort liner is removably coupled to the low friction layer opposite the protective shell, and includes a low friction material, such as brushed nylon, adjacent the low friction liner. The comfort liner may be removably coupled protective shell with either clips that removably couple to receivers embedded in the brow of the helmet, with elastically deformable couplings that extend from the comfort liner to the protective shell, or both.