I'm not sure why these are called what they're called, since I don't actually think they'd let you take them onto a plane with you (y'know, sharp stabby objects and all that). However, the concept is sound. They're Carry-On Chopsticks, a pair of high quality, finished birch chopsticks with metal handles. When you're finished with them, the wooden half unscrews and stows away inside the stainless steel base, effectively cutting their length in half. Then you can toss them in their handy cloth bag and tuck them away for the next time you find yourself without eating utensils. $23 USD.