A soiled undergarment disposal container is provided. The soiled undergarment disposal container includes a bag for housing a soiled undergarment and a sealable closure for sealing the bag. A resizing mechanism including a one-way degassing valve is provided to extract air from the bag, when sealed, upon application of a force on the bag by a user, and a plurality of studs each sized and shaped to fit into and close an air extraction aperture of the one-way degassing valve. The position and shape of the studs provides multiple sizing options for securing the folded or rolled sealed bag containing different soiled undergarment products. The bag in a compact state is configured for concealed transport of the soiled undergarment under or within a user's clothing, and/or within a user's handbag, purse, bag.
