New rules for masks from FIE
FIE changes the rules for fencing masks, used in FIE competitions, as there has been several cases where fencers lost their masks during fencing bouts in recent years. This could be caused by loose masks, or masks that does not fit well, or by a change in the fencing styles used in FIE competitions‘.
The FIE description of the changes can be found here here.
Leon Paul has a FAQ with a detailed review of the new rules and their consequences here.
The old masks will no longer be allowed for FIE fencing competitions after summer 2018.