Colantotte Trion:Z Boost Wristband Colantotte Trion:Z is worn by hundreds of professional athletes including over 250 golf professionals on the PGA Tour, LPGA Tour and Champions Tour Silicone design is water and sweat proof making the Boost the perfect accessory for all sports Features, two 100mT ferrite permanent magnets aligned in Colantotte's Alternating North-South Polarity Orientation to maximize magnetic field flow