For decades, Rite in the Rain products have been the choice of birders, hunters, anglers and outdoor professionals who often have to take notes in wet weather. This All-Weather pen is filled with waterproof ink that won't leak, evaporate or blow-up in your pocket. Writes on wet paper and upside down in temperatures from -30°F to 250°F. Black ink. Dimensions: 5 1/4" Long.