Work Overalls Boiler Suits & Coveralls Dickies Workwear/work wear, This long sleeved 100% cotton coverall is incredibly lightweight at only 170gm² (a heavier 100% cotton version is available if preferred, Dickies Lightweight Cotton Coverall | WD2279LW | Dickies, a one-piece protective garment worn for heavy manual work; a boiler suit,one-piece, loosefitting, outer garment with sleeves and legs, worn, often over regular clothing, as to protect against dirt.