A portable mattress means naps everywhere 05:55:00 Simone Giertz—who previously made her own space program—has now moved on to inventing her own personal, portable mattress. Share: Email ThisBlogThis!Share to XShare to Facebook Related Posts:Vox interviewed 8 GOP senators about the health bill, and their answers are real head scratchersGood deal on my favorite measuring spoonsWatch: Stephen Colbert celebrates Mueller forming 'Obstruction of Justice League' to investigate TrumpThis guy submitted a 3D model of his face to get his ID cardProgrammer pay and indent-style: tab-using coders earn less than space-using coders