HyperG Gel Roller Pens raise breast cancer awareness and contain ultra smooth, acid-free gel ink that is check-safe, permanent and smudge-resistant. A portion of the proceeds will be donated to the nonprofit Breast Cancer Research Foundation to helpprevent breast cancer. High-performance, indelible gel ink secures checks and important archival documents. Permanent, archival, quality ink helps prevent fraud with a waterproof, smudge-resistant design that can't be washed off. Quick-drying ink isalso safe for lefties and airplane-safe. Other features include a retractable tip, comfortable, latex-free grip, and diamond-cut barrel with silver barrel accents. 0.7mm tip writes medium lines. Pen is made of a high percentage of recycled material by weight, excluding consumable content and refills. Refill with KLR7 refill. Certified AP nontoxic.