Brand new in the wrapping! Size L. These great looking black & white adidas Sport wristbands contain a mega dose of negative ions! We are surrounded each day with high levels of positive ions from UV rays, cell phones and in fact all electronic devices. The adidas/IonLoop wristband helps your body fight back with high levels of negative ions which are absorbed into your body—which is why many of the top professional athletes choose to wear this fatigue fighting sport wristband.