Illinois Supplemental Order Imprisonment In County Jail (SOCK) is a sentencing option for criminal offenders in Illinois. SOCK sentences are intended for those convicted of serious felony offenses in which the court has determined a sentence of incarceration is appropriate, but the defendant is ineligible for a sentence of incarceration in an Illinois Department of Corrections facility. SOCK sentences are imposed in county jails and require offenders to serve their sentences locally in the county where the offense occurred. Types of Illinois Supplemental Order Imprisonment In County Jail include: * Standard SOCK sentences, which are imposed for a fixed term of imprisonment up to one year; * Extended SOCK sentences, which are imposed for terms of imprisonment greater than one year up to the statutory maximum for the offense; * Probationary SOCK sentences, which are imposed for probationary terms of up to four years, with any remaining term of imprisonment served in the county jail; * Split SOCK sentences, which are imposed for a fixed term of imprisonment up to one year, followed by a probationary term of up to four years; and * Supervised Release SOCK sentences, which are imposed for a fixed term of imprisonment up to one year, followed by a period of supervised release.