Abstract: A full-face mask including a mask body, a breathing tube, an isolation support portion, and a first partition is provided. The mask body includes a lens portion and a soft portion, the soft portion fits a user's face to form an inner space. The breathing tube is disposed above the mask body and is connecting with the inner space. The isolation support portion is disposed in the inner space to define an upper space and a lower space which are connected with each other. A first partition is disposed in the lower space and includes an intake valve. The lower space is defined with a proximal space and a distal space. When the user inhales, the clean air passes through the intake valve into the proximal space. Thus, the user could effectively breathe, exhale and/or isolated from leakage water to avoid danger.

Abstract: A fastening device can be attached to an activity equipment. The fastening device includes at least one buckle and a flexible band. At least one positioning pillar is provided inside the buckle. The flexible band has two end portions, and each end portion has at least one positioning hole. The buckle and the flexible band can be assembled together and separated from each other. In an assembled state, the positioning pillar inserts inside the positioning hole so that the end portion is fixed inside the buckle and the flexible band extends outside the buckle from a rear end of the buckle.

Abstract: A snorkel mouthpiece assembly, including a main body, a mouthpiece, a connecting component and an accessory, is provided. The mouthpiece is connected to the main body. The connecting component includes a connecting portion and a fixing portion opposite to the connecting portion. The connecting portion is detachably connected to the main body, and the accessory is connected to the fixing portion. In this way, the snorkel mouthpiece assembly could be equipped with a variety of accessories during water or diving activities.

Abstract: A snorkel assembly for underwater exercise including a snorkel tube, a mouthpiece portion and a valve seat is provided. The mouthpiece portion is configured to connect to and be in gas-communication with the snorkel tube. The valve seat is disposed in the snorkel tube or between the snorkel tube and the mouthpiece portion. The valve seat comprises a valve piece and a seat portion. The buckle portion of the valve piece is buckled to a buckle seat of the seat portion. The valve piece hangs on the seat portion with the buckle seat as a fulcrum. The valve piece is in a normally-open state when bearing no pressure, and is closed only when a user exhales.

Abstract: A full-face mask, including a mask body, a breathing tube, an unfolded isolation support portion, at least one intake valve and at least one isolation plate, is provided. The mask body fits an user's face via a soft portion to form an interior space. The breathing tube is disposed on the mask body and is connecting with the interior space. The unfolded isolation support portion is disposed in the inner space and completely fits and covers the cheeks and the nose of the user to define an upper space and a lower space. At least one intake valve is disposed on the unfolded isolation support portion. A guide plate is disposed in a channel. Thus, the user could effectively breathe and exhale the air, and could isolate the face from the water leaking into the full mask to avoid danger.

Abstract: A strap fix structure for a goggle mask with a strap body and two side buckles is provided. The strap body includes a middle portion, two tail end portions and two buckle attachments. The tail end portions are disposed on two opposite sides of middle portion and the buckle attachments are disposed on distal ends of tail end portions respectively. The side buckles are disposed on two sides of a frame portion of the goggle mask respectively. The two tail end portions of the strap body are firstly passed through the two side buckles respectively and then folded up. The two buckle attachments disposed on the distal ends buckle folded parts of the two tail end portions to other parts of the two tail end portions respectively. The other parts are not passed through the side buckles.

Abstract: Fins with a secondary blade set including a foot pocket portion, a main blade and a secondary blade set are provided. The foot pocket portion is used to fit a user's foot. The main blade includes a first end and a second end. The first end is fixed to the foot pocket portion and the second end is extended along the first direction that is away from the foot pocket portion. The secondary blade set includes at least one secondary blade which is disposed on the main blade via a fixing portion.

Abstract: A full-face goggle that a micro-camera can be attached to, including a frame portion and a detachable structure, is provided. The frame portion is assembled to a lens and a skirt portion so as to fit to a user's face. The micro-camera is pivotably and detachably attached to the bottom side of the frame portion via the detachable structure.

Abstract: A goggle mask and a method of manufacturing the goggle mask are provided. The goggle mask includes a mask structure, a lens structure and a sealing glue material. The mask structure includes a skirt portion and a glass portion which is connected to the skirt portion. The glass portion includes a groove with a first inside surface, second inside surface and third inside surface. The lens structure includes a peripheral portion which is disposed in the groove and includes an annular surface facing the second inside surface. The front side surface faces the first inside surface, while the rear side surface faces the third inside surface. The sealing glue material is formed between the peripheral portion and the groove to provide a waterproof connection between the peripheral portion and the groove. Therefore, the manufacturing and/or the assembly of the goggle mask is advantageous.

Abstract: A regulatable pressure goggle mask having a lens and a regulating structure is provided. The lens includes a viewing area and a regulating pressure area disposed under the viewing area. The regulating structure is disposed in the regulating pressure area and includes a support unit and two recesses disposed adjacent to the two sides of the support unit. The two recesses extend to two sides of a nose of a user respectively, and are formed by a first soft material.

Abstract: An underwater exercise equipment with a buckle apparatus is provided. The buckle apparatus has a base, a buckle and at least one pressing portion. The base extends from a first end of the lens and is formed with the lens. The base has a rotation axis where a belt can bypass. The buckle is pivotably disposed on the base. The at least one pressing portion extends from a second end of the lens and is formed with the lens, and the at least one pressing portion is disposed adjacent the buckle. When the belt bypasses the rotation axis, the buckle is adapted to clasp and fasten the belt, and the belt can be released by pushing the at least one pressing portion.

Abstract: A snorkeling tube structure with a tube body and a partition portion is provided. The tube body is formed along an axis and has an outer surface and an inner surface which encircles the axis to define an air passage; the axis includes a curved section. The partition portion is formed integrally with the tube body along the axis, and disposed on the inner surface of tube body to divide the air passage into an intake passage and an outtake passage. A method of manufacturing a snorkeling tube structure is also provided, including the following steps: forming a parison including a first passage and a second passage; placing the parison in a mold cavity; injecting air into the first and second passages to inflate the parison towards a wall of the mold cavity; and removing the inflated parison from the mold to get a snorkeling tube structure.

Abstract: A waterproof mask is provided. The waterproof mask comprises at least one lens set and a leaning portion. The leaning portion defines a first portion and a second portion. The first portion connects and supports the at least one lens set, while the second portion is provided on a skirt portion of the first portion for fitting onto the human face. The second portion extends toward an inside surface of the first portion to be bent so as to form a contact surface touching the human face and a curved surface formed by at least one curvature radius. A cushion space is formed between the contact face of the second portion and the inside surface of the first portion. Thereby, the cushion space is capable of being compressed while the contact face receives a force.

Abstract: A snorkel is provided. The snorkel has a mouthpiece portion and a waterproof structure which is disposed at an end opposite to the mouthpiece portion. The waterproof structure has a tube body and a lid body. At least one vent and a first stopper are disposed at the tube end portion of the tube body. The lid body has an opening and a second stopper. The tube end portion is provided within the lid body by passing through the opening. When the waterproof structure is located above the water, the waterproof structure is in fluid communication with the mouthpiece portion by the opening and the vent. When the waterproof structure is located below the water, the lid body is floated upwards so that the second stopper contacts with the first stopper portion to substantially block flow of the water from the opening into the vent of the tube body.

Abstract: A diving and snorkeling mask structure including a full face mask, a frame, at least one lens, a joint, a respiratory tube and at least one securing belt is disclosed. The full face mask includes a first soft material region connected with a second soft material region. The frame is combined with the second soft material region of the full face mask. The at least one lens is disposed in the frame. The joint is disposed on the full face mask, and adjacent to the upper side of the frame. The respiratory tube is disposed on the joint, and establishes the air communication with the full face mask via the joint. The at least one securing belt includes a side buckle element to snap fit the full face mask.

Abstract: A waterproof goggle is provided and includes a frame structure, a lens set and a waterproof leaning structure. The lens set is disposed in the frame structure and the waterproof leaning structure is waterproofly connected to the frame structure. The waterproof leaning structure includes an outer surface, an inner surface, several protrusions and several recesses; the outer surface is opposite to the inner surface, and the protrusions and recesses are alternately disposed on the outer surface; the protrusions are curvedly extended along a longitudinal direction from a front edge to a rear edge of the outer surface, and widths of each of the protrusions are varied along the longitudinal direction. Therefore, the leaning structure can be more easily stretched to fit different users' faces.

Abstract: A waterproof goggle is provided and includes a frame structure, a lens set and a waterproof leaning structure. The lens set is disposed in the frame structure and the waterproof leaning structure is waterproofly connected to the frame structure. The waterproof leaning structure includes an outer surface, an inner surface, several protrusions and several recesses; the outer surface is opposite to the inner surface, and the protrusions and recesses are alternately disposed on the outer surface; the protrusions are curvedly extended along a longitudinal direction from a front edge to a rear edge of the outer surface, and widths of each of the protrusions are varied along the longitudinal direction. Therefore, the leaning structure can be more easily stretched to fit different users' faces.

Abstract: A lens assembly that can be quickly released and assembled is provided. The lens assembly has a lens structure, a fixing structure and a quick release structure. The fixing structure can fix the lens structure around the eyes of a user. The quick release structure has a first quick release portion and a second quick release portion. The first quick release portion is disposed on the lens structure, and the second quick release portion is disposed on the fixing structure. The lens structure and the fixing structure can be assembled and disassembled rapidly by means of the first quick release portion and the second quick release portion without additional tools.

Abstract: A waterproof goggle is provided which includes a frame, a lens and a supporting structure. The frame has an inner ring surface, an outer ring surface which is opposite to the inner ring surface and a plurality of convex engaging teeth which are disposed on the inner ring surface. The lens is surrounded by the inner ring surface and has a non-porous rim portion which is clamped by the convex engaging teeth to affix the lens into the frame. The supporting structure has a covering portion and a supporting portion which extends backwards from the covering portion.

Abstract: A flipper is provided. The flipper includes a pocket, a blade and a strengthening structure. The pocket is for accommodating the foot of the user. The blade extends forwards from the pocket, and the strengthening structure is detachably disposed at the blade and extends to reach the front edge of the blade. The flexural strength of the strengthening structure is larger than that of the blade to constrain the swing angle of the blade relative to the pocket. By using the strengthening structure to constrain the swing angle of the blade, the flipper can not only provide a larger propulsion in the down-kicking state, but also decrease the resistance of water in the up-kicking state.