The Duo-Loop Wristband by Colantotte Trion:Z combines a vibrant new look with the unique magnetic technology found in all Colantotte Trion:Z Products. The double silicone bands and lively new color combinations create an energetic new look and a comfortable water proof design. The Duo-Loop Wristband contains two, 100mT (1,000 Gauss) magnets arranged in our unique Alternating North-South Polarity Orientation (ANSPO ) to create a larger magnetic field flow.