Abstract: A face mask apparatus for filtering air, the face mask apparatus including a primary face mask having a face seal for providing an airtight flexible seal around the nose and mouth of the user; a support sealably attached to the face seal, wherein the support has an open area that allows for passage of incoming air; a front shell for removably attaching to the support, wherein the front shell has at least one inlet hole for allowing the incoming air to pass through the open area of the support; a filter for filtering particulate elements from air, wherein the filter is configured to be housed between the front shell and the support, and the face seal provides a direct connection between the filter and the user; and a receiver projecting from an exterior surface of the front shell for receiving a secondary mask.

Abstract: A respirator mask, having a face cup shaped to cover a nose and a mouth of a user, the face cup having a face seal for providing an airtight flexible seal around the nose and mouth of the user, the face cup having at least one respiration port therethrough; a filter for filtering particulate elements from air, the filter received in an inhalation passage formed through the face cup by the at least one respiration port to filter air passing through the inhalation passage; and an accessory housing secured to the face cup to hold a mask accessory, the accessory housing being shaped to receive at least one accessory therein.

Abstract: A lacelock for a lacrosse stick head generally comprising a mechanical device affixed to a lacrosse head frame which interacts with one or more of the thongs and/or netting materials of the lacrosse head to securely hold the thongs or netting materials at a desired tension and to enable a person to readily release and adjust the tension of the thongs and/or netting materials as desired and relock into place.

Abstract: A women's lacrosse stick head generally comprising a frame and netting wherein the frame comprises a throat portion, sidewalls diverging from the throat portion, and a lip portion joining the sidewalls distal from the throat portion, wherein the sidewalls have a bottom edge provided with a plurality of concavities and apices, including a notchback area proximate to the throat portion to create a pocket, yet enabling a lacrosse ball to clear the top edge of the sidewalls.