BioGold is Latitude 64’s mixed-recycled premium blend: when Opto and Gold Line production falls short of spec, the material is melted down and combined. Opaque and mid-tier.
It behaves like a firmer baseline with premium ingredients: decent grip, better lifespan than Retro. Three moulds are listed in it.
It isn’t Gold Line. Feel and colour vary from batch to batch because the input does.