What is Ultem? Also known as PEI, it is an engineering-grade plastic that is stronger than acrylic and remarkably resistant to heat, electricity, and many harsh chemicals. These impressive properties make it a popular material for scientific, medical, and aerospace equipment. Is it overkill for a pen? Unless you have a habit of leaving your pens in the oven or dropping them into vats of sulphuric acid, maybe. Is that a reason not to make a pen out of Ultem? Absolutely not.

Proudly made in Philadelphia, this rollerball pen has a sleek black finish. It comes equipped with a smooth Schmidt 5888 ceramic rollerball refill, featuring a medium point and vibrant black ink.

Note: Avoid cleaning this pen with solutions containing ammonia, as ammonia can damage Ultem over time.