Abstract: A closure system for a flexible tube, for example a sleeve, a leg or the waist of a garment. The tube has an outer surface and an inner surface. There is a cord to extend around the flexible tube, between the inner and the outer surfaces. An opening in the inner surface allows passage of a first end of the cord. A releasable anchor engages the first end of the cord. There is a fixed anchor for the other or second end of the cord. Pulling on the first end of the cord with the releasable anchor released contracts the inner surface of the tube to provide a closure or seal for the tube. The closure system provides an effective seal for a leg, sleeve or waist of a garment. The seal can be achieved simply by pulling with one hand on the first end of the cord.

Abstract: A circumferential suppression system is disclosed. It is designed for use wherever an adjustment requiring a loose fit up to and including a tight seal is to be made. It can be effective in reducing and preventing the entry of cold air, water, toxic gases and vapours and other harmful or undesirable fluids. It is adopted to be used with garments and articles made of suppled material. It is comprised of a drawline having one end attached to the article and a free end adapted to be led along the circumference of the article to a return anchor point and led back along itself to a pivoting anchor point attached near the attached end of the drawline. The return anchor point is attached to the article at a point along the circumference, opposite the attached end of the drawline.