A smart clothing and backpack system enables a user to perform many actions. The smart clothing includes circuitry and/or is made of a conductive material enclosed in an insulation material. The smart clothing includes a set of sensors configured to detect body information. The smart clothing includes multiple electromagnets configured to adjust a size of the smart clothing. The electromagnets are configured to have an increased attraction to make the smart clothing tighter on the body of the user. The system includes a smart backpack to communicate with the smart clothing. The smart backpack includes a Radio Frequency IDentification (RFID) reader configured to detect RFID tags on or in items within the smart backpack. Many other features are able to be implemented with the smart clothing and backpack system. The smart clothing is able to include a wetsuit configured to communicate with a surfboard and/or a backpack.

A centerboard for a boat, having a body with a head disposed at its proximal end and an arm emanating therefrom. The centerboard is of unitary construction, namely wherein the body, the arm, and the various specific features associated therewith, all consist of a single piece or portion of uniform material.

A portable inflatable diving float that includes an inflatable float body is revealed. The float body consists of a horizontal portion provided with a left folding area formed on the left side and a right folding area formed on the right side. After the left and the right folding area being folded to a middle portion of the float body, a left edge portion of the left folding area and a right edge portion of the right folding area are connected by a first connection member and kept in the folded state. A flat body formed after deflation of the float body becomes a backpack body with smaller area. At least one strap member is connected between the top end and the bottom end on a front side or a back side of the float body so that users can carry the backpack body on their back.

The invention relates to a fiber reinforced structural component, which may be used in a surfboard for stand-up paddling, wave riding, wind surfing and the like, comprising a body made of plastic, wherein the body is delimited by a surface, to which a laminate layer made of a fiber mat and a matrix is undetachably connected. The surface has at least one circumferential groove-shaped recess, by means of which a predetermined partial area of the surface is delimited.

The invention relates to a fiber reinforced structural component, which may be used in a surfboard for stand-up paddling, wave riding, wind surfing and the like, comprising a body made of plastic, wherein the body is delimited by a surface, to which a laminate layer made of a fiber mat and a matrix is undetachably connected. The surface has at least one circumferential groove-shaped recess, by means of which a predetermined partial area of the surface is delimited.

Provided are a surfboard and a water sports device. The surfboard comprises a board body (100) and a rigid support assembly (200) embedded in the board body. The rigid support assembly replaces a carbon fiber layer to serve as an anti-bending framework of the surfboard, such that the production process for the surfboard can be simplified, and the production efficiency can be improved.

Provided are a surfboard and a water sports device. The surfboard comprises a board body (100) and a rigid support assembly (200) embedded in the board body. The rigid support assembly replaces a carbon fiber layer to serve as an anti-bending framework of the surfboard, such that the production process for the surfboard can be simplified, and the production efficiency can be improved.

A water ski fin comprising a planar body and a plurality of chevrons. The planar body may have a top end, a convex leading edge, and a trailing edge. The mounting elements on the top end may mount the fin on a tail of a water ski. A bottom may connect the leading edge to the trailing edge. A plurality of chevrons may have alternating crests and troughs positioned in the trailing edge.

A water ski fin comprising a planar body and a plurality of chevrons. The planar body may have a top end, a convex leading edge, and a trailing edge. The mounting elements on the top end may mount the fin on a tail of a water ski. A bottom may connect the leading edge to the trailing edge. A plurality of chevrons may have alternating crests and troughs positioned in the trailing edge.

A smart clothing and backpack system enables a user to perform many actions. The smart clothing includes circuitry and/or is made of a conductive material enclosed in an insulation material. The smart clothing includes a set of sensors configured to detect body information. The smart clothing includes multiple electromagnets configured to adjust a size of the smart clothing. The electromagnets are configured to have an increased attraction to make the smart clothing tighter on the body of the user. The system includes a smart backpack to communicate with the smart clothing. The smart backpack includes a Radio Frequency IDentification (RFID) reader configured to detect RFID tags on or in items within the smart backpack. Many other features are able to be implemented with the smart clothing and backpack system. The smart clothing is able to include a wetsuit configured to communicate with a surfboard and/or a backpack.