I'm not going to comment on the safety relavence. But I have seen a fair few MTBrs, especially those out trekking, using climbing helmets. Same shape as a snowboard/ski helmet, without the insulation.
@Smallfurry started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I'm not going to comment on the safety relavence. But I have seen a fair few MTBrs, especially those out trekking, using climbing helmets. Same shape as a snowboard/ski helmet, without the insulation.