Linen shirts are articles of clothing that protect a Blockhead's upper body from the environment and limited climatic conditions. They are the lowest form of protection for a Blockhead's upper body in the game. When equipped, a Blockhead's environment bar and happiness bar will steadily decrease at a slower rate than an unequipped Blockhead. Over time, if linen shirts are equipped on a Blockhead, the shirt will slowly degrade and eventually be destroyed. Linen shirts are able to be dyed to customize the appearance of a Blockhead.