No issues so far. My previous lock gave up within 2 weeks, and I think because this used a padlock rather than a lock mechanism it’s better. The chain isn’t too heavy and is comfortable to wear in my bag on my commute to work.
I bought this more as a deterrent than a security feature. it looks relatively sturdy and is fairly light weight so its alright if youre carrying it with you on rides.
Delighted with this chain. It is thick and sturdy, the lock is solid and several keys have been supplied. It was delivered in good time. Altogether a good experience and generally feel that this is good value for the price
aaron 
