Retractable pens feature a quick-dry gel ink that helps prevent smudging to ensure your writing stays clean and legible. 0.7mm tip provides consistently smooth writing performance for crisp neat results whether you're writing a quick note or a lengthy paragraph. Plus a plastic clip allows you to conveniently attach the pen to pockets notepads binders and more for quick storage and retrieval. Retractable pens with blue ink are perfect for business professionals students teachers and more.