Helmets
The first climbers on the Eiger stuffed their felt caps with woollen scarves in an effort to protect themselves from the numerous falling rocks pitching down the infamous face that, made what was already a dangerous climb, even more so.
Next came modified work helmets until the first helmets specifically designed for alpinism were sold in 1958 by Shuster in Munich. It would be years before the mountaineering community accepted them.
Today the main idea is not the strength of the helmet itself but rather its shock absorbing capacity, avoiding damage to the “contents”.
Grivel reckons it has interesting and new ideas in this field too.