This pack of 4 pencils includes a bonus sharpener. The triangle shape is designed for comfort and to encourage proper writing technique.
My daughter has trouble holding regular round pencils, but the triangular shape of these keeps her fingers in the right spot. The built-in sharpener in the pack lid is surprisingly sturdy and makes a nice point every time.
The triangle grip really does stop my fingers from cramping during long study sessions, and it feels more natural than standard round pencils. The bonus sharpener is a practical touch, and all four pencils have held up well so far. I've already ordered another pack.