The American pressed fiber sun helmet is known for the simplicity of its design, allowing for easy mass production.
 An important feature in the original conception of the helmet was to be shaped and contoured from one singular piece.
 This greatly assisted in making the helmet waterproof.
 The fiber material kept the helmet light and the soldier unencumbered by headgear.
 The major drawback in the design was heat.
 Despite being designed with a series of ventilation holes, the interior of the helmet would eventually become hot in the sun.
 The chin straps for the World War II model were made by General Fibre Company and Hawley Products Company, the same fiber liner used in the original M1 helmets.
 The design of the International Hat and Hawley Product versions of the helmet are almost identical.
 However, the defining difference in identification is that the Hawley Product model has four folds with a wider space between them in the faux puggaree.
 A puggaree is a type of Indian turban, namely a thin muslin scarf tied around a sun helmet.
The International Hat has five thin folds in its faux puggaree.

Military helmet historian Peter Suciu describes the fiber helmet design as taking:
the basic shape of a safari helmet, complete with a faux ventilator at the top and a faux wrapping of puggaree around the dome of the helmet–the latter ironic because previous American sun helmets never used a puggaree.
 For ventilation, there were a number of vent holes with grommets on each side.
 The early helmets had three lower vent holes with two vents above, while the post-wartime examples feature four lower ventilation holes.

The original fiber helmets in the 1940s were khaki colored.
 However, a dark green version of the helmet was produced during the Vietnam War.
A white helmet was used by the Military Police Corps in tropical regions.
This model of fiber helmets was originally used by the US Navy.
 These later versions of the helmet had an elasticized chinstrap that was detachable from the helmet.
 In the case of the original model, the strap was permanently attached to the liner.
The American pressed fiber sun helmet is known for the simplicity of its design, allowing for easy mass production.  An important feature in the original conception of the helmet was to be shaped and contoured from one singular piece.  This greatly assisted in making the helmet waterproof.  The fiber material kept the helmet light and the soldier unencumbered by headgear.  The major drawback in the design was heat.  Despite being designed with a series of ventilation holes, the interior of the helmet would eventually become hot in the sun.  The chin straps for the World War II model were made by General Fibre Company and Hawley Products Company, the same fiber liner used in the original M1 helmets.  The design of the International Hat and Hawley Product versions of the helmet are almost identical.  However, the defining difference in identification is that the Hawley Product model has four folds with a wider space between them in the faux puggaree.  A puggaree is a type of Indian turban, namely a thin muslin scarf tied around a sun helmet. The International Hat has five thin folds in its faux puggaree.
Military helmet historian Peter Suciu describes the fiber helmet design as taking:
the basic shape of a safari helmet, complete with a faux ventilator at the top and a faux wrapping of puggaree around the dome of the helmet–the latter ironic because previous American sun helmets never used a puggaree.  For ventilation, there were a number of vent holes with grommets on each side.  The early helmets had three lower vent holes with two vents above, while the post-wartime examples feature four lower ventilation holes.
The original fiber helmets in the 1940s were khaki colored.  However, a dark green version of the helmet was produced during the Vietnam War. A white helmet was used by the Military Police Corps in tropical regions. This model of fiber helmets was originally used by the US Navy.  These later versions of the helmet had an elasticized chinstrap that was detachable from the helmet.  In the case of the original model, the strap was permanently attached to the liner.
American fiber helmet