Classic size 6/0 ponybead.
These colours are made using ecologically friendly water-based pigments (not synthetic colours) and could react adversely when subjected to aggressive acids which could be found in some chemicals, the alcohol in hand sanitizers but mainly in human perspiration which is unavoidable. Our testing shows that they are subject to friction and wear when rubbing against other beads, i.e. multiple bracelets worn at the same time.
Color will come off with friction, especially rubbing on other beads. By the pack of 20g.