The WEMO Armband Memo is an ingenious silicone slap bracelet that's a practical (and civilized) tool for those who like to write notes on their hand or arm. This wearable, erasable memo band allows you to capture thoughts on the go using any oil-based writing instrument, like a ballpoint pen, avoid water-based ink. When you're ready for the next good idea, remove writing completely with any eraser or even your fingers.  As if the Armband Memo isn't functional enough, there's a metric ruler printed along one edge and an imperial ruler printed on the other.

9.375 length × 1.75 width × .3" depth