• Solid colored t-shirts are 100% combed ringspun cotton, however, heathered colors could contain a cotton/polyester blend
• Preshrunk to minimize shrinkage
• Double-needle sleeve and bottom hems

The I Marine Expeditionary Force is a Marine Air Ground Task Force (MAGTF) of the United States Marine Corps primarily composed of the 1st Marine Division, 3rd Marine Aircraft Wing, and 1st Marine Logistics Group. It is based at Marine Corps Base Camp Pendleton.

I Marine Expeditionary Force is the largest of the three MEFs in the Fleet Marine Force and is often referred to as the "Warfighting MEF" for its consistent involvement and contributions in major armed conflicts. It is presently commanded by Lt. Gen. Karsten S. Heckl. The deputy commander is Brig. Gen. Thomas Savage, who concurrently serves as the commanding general of the 1st Marine Expeditionary Brigade.