wemo Band Type Erasable Memo (Anti-Bacterial) / CosmotecThis is a "Wearable Memo" that you can wrap around your arm and use anywhere, anytime, designed with the concept of "write remind anywhere, anytime." It is made of silicone and features a unique coating that allows you to write with an oil based ballpoint pen and erase with an eraser or your finger, making it reusable multiple times. Since it does not disappear even when wet, you can keep it on while washing your hands or working underwater. The