Each Steel Defender Sentry Armor Plate Carrier is fully adjustable to fit sizes medium through extra-large. The Sentry perfectly couples light-weight and agile manueverability in a great package. Simply put the Sentry gives optimal protection available in an instant. It makes for a great behind the seat vehicle carrier or have just within reach under your bed for immediate access. Gear it up with the pouch assembly options and have your pistol, mags, and igear available on this amazing carrier as well. A very comfortable and breathable mesh lining only adds to the pluses this vest brings.