Edelrid Ultralight II Helmet When the Ultralight came on the market in the 1980s, this was probably the best climbing helmet in the world – and is still a top choice today. The Ultralight‘s classic shape and sturdy construction makes this helmet absolutely ideal for institutional use in places like adventure parks or climbing schools. Nevertheless, experienced climbers and mountaineers appreciate its timeless design and great value for money. It’s no wonder that this helmet has received so many awards over the years. Head size 54-60 cm.