The Sandbag Front Squat is a variation that won’t allow you to lift as much weight as the more common Sandbag Back Squat. It is, however, a vital functional movement and requires a higher degree of core strength than other squat variations. I say functional because it is a more natural (and likely) position in which be holding an external weight. It also progresses nicely into Press variations and the Sandbag Clean.
Images and text from The Complete Guide To Sandbag Training