Rite in the Rain All Weather Pens
All Weather Clicker Pen - Black Ink #93K  $14.95 each Add to Cart
All Weather Clicker Pen - Refill - Black Ink $8.95 each Add to Cart

This pen writes underwater and upside down in temperatures ranging from -30 to +250 degrees F, in black ink. While any pencil works great on Rite in the Rain paper, sometimes you just need a pen. These All-Weather pens write on wet paper and upside down.