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Some helmets from bern have special holes that are compatible with u-locks and similar. (https://www.bernhelmets.com/collections/bike-helmets/products/hudson ht
by sleepybrett 4y ago
Some helmets from bern have special holes that are compatible with u-locks and similar. (https://www.bernhelmets.com/collections/bike-helmets/products/hudson https://www.bernhelmets.com/collections/bike-helmets/product... u-lock vents) I haven't done an exhaustive search but I imagine others do similar.