Pencils will work great on Rite in the Rain's all-weather paper but sometimes you just need a pen. This Durable Standard Clicker Pen writes on wet paper and upside down, the pressurized ink cartridge performs well in temperatures from -30F to 250F. The pen holds steady in wet conditions with the rubberized grip and the ink won't leak, evaporate, or blow up in your pocket. Measuring 5-1/4" long, with a barrel diameter of 3/8". Sure to be a favorite when you are in the field. | Rite in the Rain Durable Standard Clicker Pen