A device for measuring physical activity of a user during swimming is provided, which includes the following: a sensor unit adapted and dimensioned to be coupled with swimming goggles, wherein the sensor unit includes a motion circuitry configured to measure physical motion of the user; an optical cardiac activity circuitry configured to be placed at least partially against a body tissue of the user and to measure cardiac activity of the user; and a wireless communication circuitry configured to transfer data between the device and at least one external device, wherein the wireless communication circuitry is configured to transfer physical activity data of the user to the at least one external device, and the physical activity data includes at least one of motion data obtained using the motion circuitry, cardiac activity data obtained using the cardiac activity circuitry.

A cushion member (10) for a mask structured to be worn on a face of a user. The cushion member includes a cushion portion (12) having a sealing portion (13) and a body portion (14) extending from the sealing portion, the sealing portion being structured to engage the face of the user; and at least one mesh member (22) embedded in at least one of the sealing portion and the body portion.

The present invention is to provide a swimming goggle swimming goggle cushion pad in contact with a wearer's face around the eye socket, comprising: a connection frame defined with an inner peripheral face and an outer peripheral face, a circumferential fitting groove mounted between the inner peripheral face and the outer peripheral face to receive a circumference of the swimming goggle frame; a face contact portion extending along the inner peripheral face of the connection frame and defined with an outer ring surface and an inner ring surface; a buffer unit disposed between the inner peripheral face of the connection frame and the outer ring surface of the face contact portion; wherein the buffer unit provides the face contact portion with support and restoring forces against a deformation stress produced between the cushion pad and the wearer's face when worn, to ensure a comfortable engagement with the wearer's face skin.

Swimming goggles include two eyepieces with a substantially cup-like shape, a bridge element connecting the two eyepieces at the nose, a strap wrap the head, couple the outer ends of each eyepiece and keep the goggles in place when in use, wherein each of the two eyepieces includes at least one polygonal plan shaped flat front lens or wall and a shell wall composed of a set of polygonal plan shaped flat lenses joined to each other, along adjacent contact edges, and with the peripheral edge of the at least one flat front lens or wall to delimit a reduced volume inner chamber, which is completely open towards the rear part of the eyepiece, that is, towards the eye.

A head strap for swimming goggles includes two ends, a rear portion, and two side portions. Each side portion is located between the rear portion and one of the ends. A slit extends from of one of the side portions through the rear portion to the other side portion. The slit divides each side portion into an upper side section and a lower side section and divides the rear portion into an upper rear section and a lower rear section. A portion of the upper side section and a portion of the lower side section of each side portion clamps one of two sides of a head of a wearer. The upper and lower rear sections of the rear portion of the head strap clamp the back of the head of the wearer. The head strap can be assembled with a body and two buckles to form swimming goggles.

A performance monitoring device includes a storage section adapted to store information related to a location of a target on the move, a processing section adapted to update the information stored in the storage section, and a notification section adapted to make a notification of information related to a relative position between a user on the move and the target using the updated information related to the location of the target.

A swimming goggle cushion pad is connected to a frame of swimming goggles, wherein the cushion pad comprises a base, a face contact portion mounted on a side of the base and a lens frame disposed on another side of the base in opposite to the face contact portion, the lens frame being defined with an inner peripheral face and an outer peripheral face with a circumferential fitting groove arranged between the inner peripheral face and the outer peripheral face to hold a lens therein, characterized in that: the side of the base mounted with the face contact portion slightly bends inward along an outer peripheral contour of the base to form a cap shape, and the face contact portion comprises two arc surfaces of attachment to a wearer's face so as to provide complete coverage on the eye socket, regardless of various sizes of the wearer's face.

A goggle with a soft head strap having a circular cupping or open bucket portion is attached a goggle frame with one or more lenses through an attachment mechanism. The attachment mechanism includes brackets attached to strap ends and having matched apertures that press or snap onto raised clip structures on side portions of the goggle frame.

The present invention provides a lens assembly structure of swimming goggles. The lens assembly structure comprises two lenses, two retaining walls, two skirt portions, and two frame portions. Each of the lenses includes an eye side and a water side opposing to the eye side. The two retaining walls are provided on the eye sides of the lenses, respectively, and each of the retaining walls defines a visible area and a connection area. Each of the retaining walls has a configuration, and the corresponding skirt portion is disposed along the configuration. The connection area of the lens is affixed in the corresponding frame portion. The configuration of each of the retaining walls is a curve having a contour which is less complicated than a peripheral configuration of the lens.

The invention relates to spectacles, systems and methods for visibility enhancement, including by glare suppression. The spectacles, systems and methods for visibility enhancement includes spectacles and a spectacle lens having a liquid crystal cell (LC), the transmission (TR) of which may be varied by a suitable control and the liquid crystal cell (LC) designed so that the transmission (TR) of the liquid crystal cell (LC) may be switched between high and low transmission states. The liquid crystal cell (LC) includes a control for regulating the times of the state of high transmission (T.sub.on) of the liquid crystal cell (LC) such that the temporal position of the times of the high transmission state (T.sub.on) within a period of times of the high transmission state (T.sub.on) and times of the low transmission state (T.sub.off) may be altered continuously or discontinuously; and/or the duration of a period of times of the high transmission state (T.sub.on) and times of the low transmission state (T.sub.off) may be altered continuously or discontinuously. Such changes may be determined by a secret coding key.