I thought I was being complimentary. The Helix is an amazing bike. I don't recall the exact difference in folded size with a Brompton, but recall looking at that when it first was announced, and I was quite impressed. Innovative design, super compact with almost full size tires, quality, plus titanium, and initially was an amazing price for all that. I just don't know if it will fit standard checked bag size. I had also wondered about rear rack ability but have since seen videos of people pannier touring with one.