V.S.S.L., short for Virtual Solid Sense Laboratory, known as V.S.F.L. or Virtual Solid Feel Lab (バーチャル・ソリッド・フィール・ラボ Bācharu Soriddo Fīru Rabo) in the Japanese version, is a Facility owned by Rex Goodwin in the Yu-Gi-Oh! 5D's manga, which holds underage prisoners. There, Rex, Lazar and Zigzix performed experiments to test the children in order to secretly create a Solid Vision system which could hold the power of a Duel Dragon. The children were constantly monitored by several cameras spread in the experiment rooms and in their rooms.