I read all the bad reviews and did some modifications before I brought it on a 3 week trip to Hong Kong.1) People complain about losing the bolts that held the removable front wheels: I replaced them with clevis pins (M6x30mm) https://www.amazon.com/gp/product/B01ARAEFPI/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 and secure it with hairpin clips. The pins stayed in place and can be easily removed to take the wheels off.2) As others have suggested, I bought long velcro straps and placed them on the handlebar. It's used it to stop the retracted chair from opening accidentally when you take it out of the trunk or jetbridge. The velcro is also a good way to hold shopping bags. (see 2nd pic, I used velcro to hold the bags. If you want a quality suit in Hong Kong, Jim's is highly recommended)3) Some complained that the foam on the handle is cheap and goes flat after few uses. I replaced it with pipe insulation. Very comfy.4) I applied Loctite to all the nuts and bolts. Although the bolts seems to have Loctite applied from the factory. I reapplied it with Loctite just to be sure.I took the modified chair on a 3 week trip to Hong Kong. It held up well. Very light, easy to fold and put away even on a crowded subway train (Pic 1). It went over uneven streets of Hong Kong and cobblestoned sidewalks of Macau without any issues.Be very careful when going over streetcar tracks. The chair is light and the front wheel bear quite a bit of weight so if it hits a gap on a train track or raised sidewalk, you have the potential of ejecting your passenger. Always remember to transfer a bit of the weight to the rear wheels when going over uneven surfaces.Excellent chair, well worth the money.