Our Mission: To protect, preserve and promote the natural integrity of Radnor Lake through land acquisition, environmental education and park support.
Chains up to 12 mm thick are generally portable: you can carry them around on your bike every day. The long ones will be really heavy though, so please check the weight. Above 12 mm the chains are more suitable as stationary locks: you would leave them wherever you lock your bike for long periods of time.
Just keep in mind that tougher lock is often heavier and that you'll have to carry that weight around. Chains are sometimes heavier than ulock for the same level of security, maybe 1.5 heavier sometimes. The NY Mini is maybe 4 pounds, but some of those Kryptonite chains are 10 pounds.