Although printed in plastic Pla or Abs (non flexifle filaments), its structure in the arms allows it to behave flexibly. This allows the movement just so that the arms can hold your smartphone. Also works great holding your earphones. It is a simple 3d impression. You only have to consider these printing options when preparing the file for your printer: -For this print you should reinforce the piece with a wall thickness of 1.2mm Filling : 20%. -Without support ​ If you like my designs, Please consider making donations so that I can continue to share my designs​. Thanks! http://www.soniaverdu.es/p/con...