When I started bouldering some time ago, I noticed that I didn't like the chalk bags the climbers used. A chalk bag is used to store magnesia powder used by the climbers to keep their hands dry to get better friction.
What I didn't like about the common chalk bags was the use of the typical outdoor materials and the outdoor aethetics – the bags always felt dirty. You can avoid this feeling using the right colours and materials.
My version is made out of Tyvek, simple and white.