Folds tiny enough to fit in an airplane overhead bin, then pops open one-handed on a crowded sidewalk.
For apartment dwellers, frequent flyers, and anyone who does stairs and subways daily, the YOYO2's trick fold is worth the premium. It collapses to a carry-on-sized package you can sling over a shoulder, opens fast, and steers effortlessly through tight aisles and doorways. The trade-offs are a small basket, a firmer ride on rough terrain, and a newborn setup that needs the separate 0+ pack or car seat adapter. Skip it if you want plush suspension, big storage, or a double, but for compact city and travel life nothing folds smaller this well.