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.
The height of your bed with this type of bed frame drops both the mattress and boxspring about 3 to 4 inches depending on the steel bed frame manufacturer. One last solution is to buy a thinner mattress. You can find thinner mattress models ranging in thickness between 7 to 12 inches.