Freedivers who choose to use a mask must be sure that the mask fits properly. Freediving masks should have the following features:
- Low volume: for easier equalisation of the mask upon descent
- Flexible: the mask skirt (the part that seals to the diver's face) should be very flexible so that it is comfortable when compressed
- Clear lenses: to allow your buddy to see your eyes
- Enclosed nose: to prevent mask squeeze
Prescription/Corrective Lens Free Diving Masks: — If you wear glasses and need some assistance seeing clearly when freediving, The Scuba Doctor is Australia's largest supplier of Corrective Lens Masks.