The Hearts Waterproof Eyeliner Pencil in Navy Blue 05 delivers bold, long-lasting definition that stays put through sweat, humidity, and water, offering up to 24 hours of smudge-proof, fade-resistant wear with an intensely pigmented, matte finish that glides on effortlessly in a single stroke. Designed with a convenient twist-up mechanism and a built-in sharpener for pinpoint precision, this ophthalmologist-tested formula is safe for sensitive eyes and waterline use, making it the perfect everyday essential for flawless, all-day eye looks.