Sabre glove rules
The rules for international fencing were changed by the FIE in 2014 due to the number of incidents of sabre blades, both broken and intact, piercing the glove and causing potentially serious injury.
As of September 1st 2016, British Fencing is implementing the FIE sabre glove regulations for all fencing with size 5 sabres. These gloves must be the new 800N standard. Details of the BFA Safety Guidelines are here.
Currently (September 2016), a new 800N sabre glove will cost around £40-45. All 800N FIE gloves will include a label as shown here, marked with the manufacture date and company, probably sewn inside the cuff.