Solitary confinement: courts may impose limited, banded solitary periods as part of rigorous imprisonment sentences. A sentencing court may order that an offender be kept in solitary confinement as part of rigorous imprisonment, subject to a total cap of three months and confined to a statutory scale: up to one month where imprisonment does not exceed six months; up to two months where imprisonment exceeds six months but does not exceed one year; and up to three months where imprisonment exceeds one year.