The Scalable Plate Carrier is a plate carrier

Bulletproof vest

A ballistic vest, bulletproof vest or bullet-resistant vest is an item of personal armor that helps absorb the impact from firearm-fired projectiles and shrapnel from explosions, and is worn on the torso...

 used by the U.S. Marine Corps as an alternative to the heavier Modular Tactical Vest

Modular Tactical Vest

The Modular Tactical Vest or is a bulletproof vest originally adopted by the United States Marine Corps in 2006. The MTV was designed as a solution to shortcomings in the current, decade-old interceptor body armor and was selected after a rigorous proposal and examination process by the Marine...

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Design

It is a lightweight plate carrier intended to supplement the Modular Tactical Vest. The vest has shoulder buckles on the back of the vest, a feature added for ease of adjustments. It has improved padding in the shoulder area. It is modeled after the Eagle Industries MBAV, and has staggered webbing on the chest.

First-generation

The SPC was fielded to combat units operating in the War in Afghanistan in 2008 as a lightweight alternative to the MTV, where it has proved popular due to the regions mountainous terrain. Marines now typically deploy with both the MTV and SPC, with commanders setting the requirements for which vest should be worn based on threat levels.

The Scalable Plate Carrier was analyzed for the U.S. Army's Soldier Plate Carrier System

Soldier Plate Carrier System

The Soldier Plate Carrier System or SPCS is a lightweight ballistic vest developed for the U.S. Army as an alternative to the Improved Outer Tactical Vest.-History:...

 demonstration.

Improved Scalable Plate Carrier

The Improved Scalable Plate Carrier (ISPC) didn't get many modifications.

Its fielding will be delayed until summer after the completion of another round of user evaluations ordered by MARCORSYSCOM

Marine Corps Systems Command

Marine Corps Systems Command is located at MCB Quantico.-Mission:Serve as the Commandant's principal agent for acquisition and sustainment of systems and equipment used by the operating forces to accomplish their warfighting mission....

. The Marine Corps plans on fielding 108,000.