Optimum Labs LLC manufactures upper-extremity prosthetic devices, custom rolled silicone liners, and fabrication tools for the clinicians who build them. Its work combines custom CAD and 3D-printed cores with silicone fabrication, while its small equipment line includes practical solutions such as the BubbleUP plaster degassing tool and adjustable prosthetic components. The company also offers digital fabrication files and says custom fabrication typically takes two to three weeks.