1The height difference between the three sides of the recess, naturally guide the thumb, index finger and middle finger to the position of the recess where they should be parked, which is comfortable to hold 2It can still maintain the correct pen holding position after cutting, suitable for young children and left-handed users. The recessed design of the pen body can prevent fingers from sliding 3Triangular shape and fine workmanship, the refill is hard, not easy to break 4Break-proof, waterproof refill design, easy to cut 5Delicate strokes, smooth writing, less stress on your hands, and easier to write 6The material of the pen is made of beech, the pen shape is good for cultivating the correct posture of the child.