Looks and feels sturdy enough to whether light off-roading despite not being made for this application. They are comfortable, stay on well and nice quality. Sennheiser sent me the "HD1" unit this time which seems to work fine. Love Easy Spirit???? But if you have slimmer feet, these are a steal. Everything sounds just as it did with the old cable. I set mine to a solid color and never changed back. I mainly just wear them around the house. It is not thick so be aware. The battery life is extensive and the recharge case will top off the earbud batteries multiple times.