The U.S. Marines have a longstanding tradition of wearing short shorts during physical training. Though the standard-issue shorts may look funny to outsiders, there are several practical reasons why Marines favor “silkies” and other short shorts for PT.
History of Short Shorts in the Marine Corps
Short shorts became part of Marine Corps culture in the 1970s and 1980s when higher-ups decided to transition from longer gym shorts to shorter, running-style shorts for PT. The idea was to provide Marines with shorts that allowed a full range of motion for physical training activities.
Over time, an even shorter style of shorts known as “silkies” emerged and became the unofficial uniform of PT in the Corps. Silkies get their name from their super lightweight, silky nylon material. They have an almost underwear-like look with their 4-6 inch inseam.
Reasons Why Marines Love Short Shorts
There are several practical reasons why short shorts are preferred by Marines for PT and exercise:
- Increased range of motion – The shorter length allows legs to move freely with less restriction.
- Better heat regulation – Shorts allow the body to cool itself faster by exposing more skin surface area.
- Lighter and faster drying – Shorter shorts weigh less when wet with sweat and can dry quicker.
- Less chafing – Shorter shorts reduce chafing during long runs or hikes.
- Built tough – Silkies have a durable construction that holds up to rugged PT.
Beyond function, short shorts also hold sentimental value for Marines. Silkies represent the shared hardship and camaraderie of intense PT. They are a badge of honor earned through miles of runs and endless sets of crunches.
Short Shorts as Part of Marine Culture
Like many things in the Marine Corps, short shorts take on an almost ceremonial role. Some key ways they represent Marine culture and tradition:
- A rite of passage – Earning the right to wear silkies is an informal milestone for junior Marines.
- Builds esprit de corps – Short shorts contribute to group morale and shared identity.
- A point of pride – Marines flaunt their shorts with pride as a testament to their toughness.
- Used in competitions – Silkies are worn during cruiser cup relay races and other events.
Times When Short Shorts are Worn
While Marines wear uniforms during most duties, short shorts are authorized only during PT activities which typically include:
- Unit runs
- Calisthenics and cardio exercises
- Organized sports like cruiser cup or intramurals
- Swim PT
- Marches and hikes
Silkies are not permitted for regular duty or with utility uniforms. They are strictly reserved for PT when maximum freedom of movement is needed.
Commonly Asked Questions
Why are they called silkies?
Silkies get their nickname from the smooth, silk-like nylon material they are made from. The fabric is designed to be lightweight and quick-drying.
How short are silkies?
The inseam of silkies is typically between 4-6 inches long. This falls above mid-thigh on most Marines.
When did Marines start wearing short shorts?
Shorter PT shorts emerged in the 1970s and 80s. Silkies themselves grew popular in the 90s and 2000s.
Can silkies be worn with boots?
No, silkies are only authorized for wear during PT events. Boots are not worn with PT gear.
Do other service branches wear silkies?
Silkies are unique to the Marine Corps. Other branches have their own versions of short PT shorts.
Conclusion
Short shorts hold a special place in Marine Corps tradition. Though they may look funny to outsiders, silkies serve important functional purposes for physical training while also representing core values like toughness and morale. For Marines, short shorts are a badge of honor earned through shared hardship.