An official design from sci fi series blakes 7 in blakes 7 the federation military was made up of troopers who wore a black uniform sometimes with silver trim and helmets with masks to hide their faces t shirt design reads blakes 7our crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g tees made with deluxe 30s soft style yarns for a soft feel