A chinstrap having a band portion with at least two head straps, one head strap fitting around a crown of a head of a person wearing the chinstrap, and one head strap fitting around a back of the head. The chinstrap has an adjustment mechanism to change a size of the band portion. The chinstrap also has a form-fitting non-slip chin pocket attached to the band portion. In an example, the chinstrap may be used to assist in holding the mouth of the person closed after death until a medication to freeze jaw muscles is injected following death during an embalming process so that an invasive mandibular septum stitch is not needed to secure the mouth closed.
