Lancelot, one of our designers, can tell you about the design process for the MTB map holder.
"When we started the project, I signed up for races, to fully grasp our needs during practice. I fell in love with the combination of fun and thought which few sports can offer. But I also had a nightmare installing the map holder, losing screws while racing, etc. So, we designed plastic fittings that are both much simpler and extremely robust.The other requirement is to be able to easily read the card and use it with just one hand, while riding!"