Perhaps adding my 2 cents worth will offer a little insight into traveling out side of the country with the Dive Caddy. I just returned from a 2 week trip to Roatan for which I used the Dive Caddy to carry "some" of my dive equipment. ( I know I packed way too much equipment, but that is a story for anther day) Packed into the Dive Caddy was a Aqua Lung i3 BCD, (XXL), a full regulator setup with computer, dive mask, snorkel, slate, SMB, polartec jump suit, a pair of board shorts, dive booties, a pair of shorts, a pair of undrware, thin socks, shirt and rain coat and some miscellaneous contact lense supplies and Ipod stuff in the turtle pack. I could not fit in a pair of fins and get teh pack to close. First the good; no problem getting through TSA, a bit of a problem stuffing it in into the over head bin, but traveling first class I was allowed to take up a bit more space. It was a bit heavy but carried well. The bad; I had to break it down twice at the Roatan airport, once for the airport inspectors and once for the airline inspection during the boarding process, (standard for everyone flying out of Roatan), the latter causing me to be one of the last passengers on board the plane while being the first to "board." My take on this bag is while the manufactuer states quite correctly that TSA seems to have little or no trouble with the bag, fitting it into an over head compartment in a crowded economy class might be problamatic at best. Flying back into the country from a foreign land most likeley will be a hassle. My conclusion; I will not use the pack again for any "out of the country trips" or for that matter as a piece of carry on luggage period and will pack far less so everything fits into two checked bags. If I must pay extra for the second checked bag, so be it! As far as any type of carry on baggage; I will limit myself to a very small pack containng contact lense stuff, Ipod and a rain jacket period! No more 20 minute inspections for me. I agree with others, the spider pack attachment method on the Gen 2 is not an improvement, but rather a big pain in the butt to break down and refasten during inspections. Just too much hassle for me; perhpas others may be OK with it. This is just one man's experinece and as the saying goes, others' milage may vary. Basically, minimal carry on luggage for me when I fly anywhere will be the rule!!!