The Mantis simplifies the need for an extra spoon by transforming into one when the two pieces are fitted together (to handle foods like congee, khao pad, okayu, chawanmushi, dal makhani, kushari, mujadara, fried rice, lentils, chili, etc) and the wide profile of the "talon" ends provide a third function to grip foods almost like tongs (for instance when picking up slippery hard-boiled eggs). They are bidirectional, with the opposite end offering the traditional and familiar experience, so they can still work as regular chopsticks, but with extended functionality.
The straight pointed ends of the Mantis can be used as conventional chopsticks. This was a deliberate design choice to preserve familiarity with traditional use and individual holding habits.
The two pieces can interlock together to form a spoon. Held gently, the seam is precise enough to facilitate handling of liquids (such as soup) with low enough drip to be practical during use.
Turning the spoon portions sideways provides pointed ends which curve inwards. This allows for finer tweezer-like control of smaller food items or an enhanced "hugging" grip of larger, slippery, food items in scenarios where a fork or serving tong would normally be needed.
The Mantis is made of a high-heat engineering food-grade resin (PPS) with characteristics between porcelain and aluminum. It's specifically chosen for its outstanding chemical inertness (among the highest known) and for its outstanding resistance to heat. This resin is not known to contain, or off-gas, the typical health-suspect compounds such as Phthalates, BPA, BPS (Bisphenols), azo compounds, halogenated aromatic compounds, or dioxins/furans.
A few key points about the resin itself:
Common sense warnings for use around (or by) young children since, due to the pointed edges, the chopsticks can be a poking hazard. Similarly, bitting-off small pieces can become a choking hazard. Furthermore, this is a glass reinforced resin and should avoid grinding and inhalation of dust particles from it under Proposition 65 for Glass, oxide, chemicals (CAS # 65997-17-3)