An early type of rudimentary gas mask was invented in the 9th century by the Banu Musa brothers in Baghdad, Iraq. They described it in their Book of Ingenious Devices,[2] mainly for protecting workers in polluted wells.[3] Rá. Essa camiseta passa por um processo manual e exclusivo de estamparia . A estampa poderá vir gasta ou com falhas, e poderá haver diferença de uma camiseta para a outra.