A cushion for supporting a wrist of a user on a flat surface comprises an elongated flexible enclosure that has an outside surface and that defines an internal volume within. The internal volume contains a filling that includes a resilient padding material and at least one silver wire. Preferably the padding material includes horse hair. The enclosure preferably includes a cotton fabric material made with a warp-faced twill weave, or other tight weave, such that the padding material is unable to penetrate the fabric material. In use, upon absorption of sweat form the user's wrist through the enclosure and into the filling, or by washing of the cushion in water, the at least one silver wire produces silver ions as an anti-bacterial agent on the enclosure and within the internal volume.