 The two-handed grip allows both hands to stabilize most of the circumference of the facemask. This is valuable because it can overcome an inadequate seal that is due to an unstable single-handed grip. Failure to obtain adequate seal between the face and a pliable facemask can also be attributed to variables not related to ventilation technique. For example, improper fit, patient anatomical variability, edentulousness, and full beard may also contribute to inadequate seal and deficient masked ventilation. 