CELLBOCK 13 UNDERWEAR - CellBlock 13 is the naughty big brother of Timoteo menswear and is designed and manufactured in Los Angeles. CellBlock 13 design underwear with a fashion meets fetish theme. The styles take inspiration from team sportswear, using high-grade mesh or stretchy nylon-polyester materials that flatter the male form and hold up under all your athletic activities - day or night.