UKH

I have a much loved pair of Julbo Zebra Photochromic galcier glasses. Does anyone know if I can replace one of the broken arms? It broke at the hinge where there is a screw

Lyon Equipment used to be the Julbo importers and I got excellent service when I lost a part off my old Drus glasses. This was a couple of years ago though. Might be worth giving them a call.

And if you don't get any luck there, you could try having a hunt around between Cairn of Claise and Glas Maol, where mine blew off a few weeks ago

Contact julbo directly.  Its how I replaced a broken nose piece after I crashed into a tree on my gravel bike.  They were unable to do anything about the large scar that now adorns my nose though.