Abstract: A small weapon, such as a short-bladed defensive knife can be innocently concealed in an article of ordinary apparel, such as a belt, according to the present invention in such a manner as to both be securely retained within the article of apparel and be quickly and simply withdrawn by a simple, single motion when needed in instances of self-defense. The weapon is retained within the article of apparel by frictional engagement between the article and the weapon, which is primarily achieved by different curvatures of the holster, which is combined with the article of apparel, and of the weapon. The frictional engagement between the weapon and the holster can be increased by providing additional end clips, protrusions, or other attachments between the weapon and its holster.