Introducing the NEW…. Extreme Necklace Cross – Metax, on fo the EXTREME PERFORMANCE GEAR Series by Phiten with METAX technology. Supports the performance of people who enjoy daily sports, to the athletes who compete in extreme conditions. The Cross Necklace is water resistant and has a sporty and sharp looking logo plate. Available in black/red and red/white. 43cm/17 inches and 50cm/20 inches.