The premium Xpress Fineliner features waterproof ink and a metal-encased writing tip. The ergonomic shape with rubberized surface provides comfort during long writing sessions and helps prevent hand fatigue. Great for use with rulers and templates with its smooth and gliding writing. The cap-off, waterproof ink does not run dry even if the cap is removed for 2-3 days. The cap with metal clip fits neatly on the end of the barrel.