RIGARDS METALLOID COLLECTION is made from an innovative aluminium and magnesium alloy. One is a traditional frame material that also happens to be prevalent in aerospace vehicles and shark-proof cages, and the other, the lightest structural metal currently available in the world. The resultant alloy permits the construction of frames that are light but strong at the same time, augmented by a clever snap-on flex-hinge at the temples (a patented design which has the advantage of less obtrusion andmaintenance) and original design nose-pads (for superb fit). Specially-developed imprinting techniques further create intriguing finishes that take their cue from the natural beauty of rocks and dunes, making the metalloid frames a premium product that is very different from everything else on the market.