The OHTO Horizon mechanical pencil is completely pocket-safe thanks to the 'double-knock' mechanism. A firm push on the top button extends the whole lead mechanism out of the barrel. Further pushes will then feed the lead as normal. To retract the tip simply press the button on the side of the pencil.
The hexagonal aluminium barrel becomes more cylindrical towards the tip.
Replaceable eraser under the push button.
Uses standard 0.5mm lead.