The Fearnley cricket website (FAQ section) states:
Q. How often should I change my helmet?
A. Helmets are designed to only take one blow. A helmet is then considered to have done its job and you should replace it. Once a helmet has been struck in whatever circumstance, i.e. dropping it or a ball striking it, then its structure will weaken and not perform as it is designed to.
(Fearnley Cricket Sales Ltd)
Is this true? Has anyone found the helmet to be weaker after they get hit once?
Q. How often should I change my helmet?
A. Helmets are designed to only take one blow. A helmet is then considered to have done its job and you should replace it. Once a helmet has been struck in whatever circumstance, i.e. dropping it or a ball striking it, then its structure will weaken and not perform as it is designed to.
(Fearnley Cricket Sales Ltd)
Is this true? Has anyone found the helmet to be weaker after they get hit once?