In LePirate we have made this collection with bamboo temples and plastic frame to make them stronger. This glasses are light, cases are made of bamboo wood too, lenses are made of strong poliacetate. Coneceived for the daily life of a climber, they will join you to all the activities that also represent climbing like walk to the cliff, drive, have breakfast in a camping chair near to your van, and read the topo in a bar with a beer in your hands discussing about the bricos you made to your van.