I have a Microraptor hardcase with wheels and extension handle I would like to trade for a microraptor backpack, which uses the same insert. I'll trade straight across if you'd rather have the hard case for greater protection, and you live I the US. My case is in like new condition, it was hardly used, about three trips in the car. I would expect to trade for a backpack in like new condition too. The tan or black version is ok. Send me a PM if interested.