M17 German Helmet 

The Imperial German Army began to replace the traditional boiled leather Pickelhaube (spiked combat helmet) with the Stahlhelm during World War I in 1916.The Stahlhelm, with its distinctive “coal scuttle” shape, was an instantly recognizable icon for military imagery and became a common element of military propaganda on both sides, just like the Pickelhaube before it.is completely wearable and can be used for reenactment purposes also.