The Sheaffer 300 rollerball in Matte Green features a matte green lacquer over brass barrel and cap that is accented by matte black-plated chrome trim. The Sheaffer 300 rollerball feels impressively weighty yet luxurious in the hand, and utilizes a snap cap mechanism to close the pen. One of the best features is the distinctive “catch” when you post the cap on the end of the barrel. There is no question that the cap in on securely, and you can write enthusiastically without fear of your cap flying across the room.