Hold on there; do some Google’isation on CTC bags; the theory us sound. If you put your bike in a cloth/soft bike bag there is no real lateral protection. Unless you put it in a hard case, it might as well go in a bin bag. But if you put it in a clear plastic CTC bag the baggage handlers can see it’s a bike, and seem to (Google it!) treat it with more respect than if it was in a cloth bag or a hard case. My carbon framed road bike was in prefect nick in a plastic see-through CTC bag when I landed in France on Easyjet recently. I have a hard case; but I don’t think I’ll use it again.Don’t try and take compressed air inflators via customs; not allowed. Other than that, I’ve not had a heap of problems so long as I’ve been inside the weight limit. Hope this helps