The small hand tool known as a mat creaser is a wonderful  example of Northwest Coast functional artistry. This completely utilitarian  object, is almost invariably found decorated with some degree of representational and sculptural design. 
            
            This lightly embellished mat creaser features the head and  tail of what is most likely a sea-bird, which may have been the owner’s  guardian spirit. The bird’s head and neck reach out from the rounded body  represented by the form of the creaser, and a small tail shape representing  raised tail-feathers nestles on the rear of the tool. 
            
            The creaser was employed in the making of cattail or tule-reed  mats, which were used as bedding and windblocks inside the grand  cedar-plank houses of the southern coast, where cattails  grew  abundantly in huge wetland tracts. Mats were also used to cover frames built wood poles to create temporary shelters  fishing or  traveling to resource-harvesting camps. These served like portable tents with canvas  covers, which in turn became available in the late nineteenth century and   replaced the use of the indigenous reed mats.
          Cattail stalk and tule-reed mats were not actually woven, but  were  sewn together with a two-strand twine made from twisted  cattail-leaf fibers. using a wooden needle and 32-38 inches long and just over one-half inch in width, with  a cross-section of low triangular shape. The bottom of the mat creaser was made  with a wide V-shaped groove along its lower edge which matched the  inverted V-form of the needle’s top surface. Large numbers of parallel reeds  were attached in this way and as each reed or row of stitching was pierced by the needle,  the creaser was run along the top of the needle to bend the reeds over the  needle’s top ridge. This created a tidy appearance and arrested any  vertical tearing of the reeds, which kept the stitches in symettrical rows. 
            
            The oval hole in the creaser was for the user’s fingers to grip through,  and the curved bottom of the tool made it easier to slide over the rows of  stitched reeds. 
            
            The finished mats were thick and had a slightly cushy feel to them, making them ideal for  bedding and as insulation on cedar-plank walls which could be  very drafty in any season. Mats could easily be rolled up for storage  and transport via canoe.