Based on the jumpsuit worn by infamous test-subject and protagonist of Portal 2, Chelle, these lounge pants were designed to give the wearer the appearance of an Aperture Laboratories test subject without the danger of exposure to lasers or deadly, deadly neurotoxin.

Made of soft cotton/poly french terry, they feature the same reinforced knee patches as Chelle's jumpsuit for sturdiness during testing, the iconic Aperture Laboratories logo embroidered at the leg, and a contrast drawstring at the elastic waist.