Master-Grav 1000 grav boots represented a specific model manufactured by Corgorlath Leisure Articles. These boots utilized repulsorlift fields, granting the wearer the capability of movement in directions ranging from 45 to 180 degrees relative to standard gravitational pull, reaching heights of up to 150 meters. Their operation was characterized by minimal auditory output. A pair of these boots was priced at 550 credits, and they gained widespread adoption in various sporting activities.