A breathable garment for heating or cooling independently the body of a wearer. The breathable garment includes an inner electrically heatable substrate intended to be facing the body of the wearer in use; a forced air supply mechanism for supplying forced air into the space between the inner electrically heatable substrate and the body of the wearer; an intermediate perforated substrate; an outer waterproof, water-vapour-permeable substrate; and a mechanism for maintaining a gap between the intermediate perforated substrate and the outer substrate, making up an air chamber to allow turbulent airflow across the entire garment.

A chest protector for accommodating a female figure may include an upper portion sized to at least partially surround a user's bust region and having a neck opening shaped to receive a user's neck region. The chest protector may further include a lower portion sized to at least partially surround a user's abdominal region. A flexible element may connect the upper and lower portions to allow the upper portion to articulate with respect to the lower portion. The upper portion may include a breast covering section extending in an anterior direction to form a breast volume for accommodating the user's breasts or breast region. The breast volume may be formed at least in part by connecting a pair of edges positioned on opposing lateral sides of the upper portion. Optionally, the upper portion may overlap the lower portion. The chest protector may be formed from resilient foam or other materials.

A kit includes at least one facemask configured to cover a respective user's mouth and nose. The facemask contains at least one layer impregnated with a first chemical. When the facemask covers the respective user's mouth and nose, airborne particles of the first chemical are released from the at least one layer through the user's breathing. A sensor is configured to measure airborne concentration of the first chemical. A processing circuitry is configured to receive outputs of the sensor, to calculate a change in airborne concentration of the first chemical, and to issue a notification when the airborne concentration of the first chemical increases at above a predetermined rate.

A kit includes at least one facemask configured to cover a respective user's mouth and nose. The facemask contains at least one layer impregnated with a first chemical. When the facemask covers the respective user's mouth and nose, airborne particles of the first chemical are released from the at least one layer through the user's breathing. A sensor is configured to measure airborne concentration of the first chemical. A processing circuitry is configured to receive outputs of the sensor, to calculate a change in airborne concentration of the first chemical, and to issue a notification when the airborne concentration of the first chemical increases at above a predetermined rate.

A compressible liner for a helmet or other apparatus subject to shock loading comprises three substantially co-extensive layers mutually engaged by respective cone-like protuberances and cone-like recesses. The intermediate layer is of a different compressibility and provides for de-coupling of the layers in an oblique impact.

A wearable power generation device, wearable clothes capable of generating power, and a power generation method are provided. The wearable power generation device includes at least one magnet unit, at least one electromagnetic induction unit, and at least an energy storage unit electrically connected to the at least one electromagnetic induction unit. The magnet unit and the electromagnetic induction unit are respectively disposed to be worn on different parts of an animal body. During movement of the animal body, the magnetic flux passing through the electromagnetic induction unit is changed to generate an induction current by changing the relative position of the magnet unit and the electromagnetic unit. The energy storage unit is configured to convert the induction current generated by the electromagnetic induction unit into electric energy for storage.

Described embodiments provide a shape memory alloy (SMA) cartridge for use in providing controllable compression. The SMA cartridge includes first and second end caps, each of the first and second end caps being coupled to a passive material. One or more SMA coils extend between the first and second end caps. The SMA coils have a trained state and a deformed state, where the SMA coils are in the deformed state when a stimulus is provided thereto and the SMA coils are in the trained state when the stimulus is removed therefrom. The first end cap and the second end cap include a locking mechanism to automatically lock the first and second end caps in a fixed position relative to one another when the SMA coils are contracted.

Described embodiments provide a shape memory alloy (SMA) cartridge for use in providing controllable compression. The SMA cartridge includes first and second end caps, each of the first and second end caps being coupled to a passive material. One or more SMA coils extend between the first and second end caps. The SMA coils have a trained state and a deformed state, where the SMA coils are in the deformed state when a stimulus is provided thereto and the SMA coils are in the trained state when the stimulus is removed therefrom. The first end cap and the second end cap include a locking mechanism to automatically lock the first and second end caps in a fixed position relative to one another when the SMA coils are contracted.

A waterproof garment is provided that includes a waterproof garment textile defining a garment opening, and a sealing sleeve joined at the garment opening. The sealing sleeve includes a substantially waterproof textile composite in the form of a tube extending between (i) a first end having a first opening and configured to fit tightly around a wearers body part and (ii) an opposing second end having a second opening and joined to the waterproof garment textile by a seam around the garment opening. The textile composite includes a stretchable textile with a substantially waterproof coating layer applied to the stretchable textile.

A waterproof garment is provided that includes a waterproof garment textile defining a garment opening, and a sealing sleeve joined at the garment opening. The sealing sleeve includes a substantially waterproof textile composite in the form of a tube extending between (i) a first end having a first opening and configured to fit tightly around a wearers body part and (ii) an opposing second end having a second opening and joined to the waterproof garment textile by a seam around the garment opening. The textile composite includes a stretchable textile with a substantially waterproof coating layer applied to the stretchable textile.