Our Triangular Dry Erase markers are great for promoting proper hand positiong when writing, and are extremely comfortable to hold in your hand. The triangular shape of the barrel also prevents the marker from rolling away from you. Our dry-out resistant ink can last up to 48 hours without the cap on under normal use and conditions, making these markers a great option for young children who may not remember to put the caps back on their markers immediately after using. The Triangular dry erase markers are also Non-Toxic and AP certified. Each package contains 25 bullet tip markers in with Black ink. Ink erases cleanly and easily.