Joolz Aer² vs Stokke YOYO³
A near tie on size: the Aer² folds to 20.9 x 17.3 x 9.2 inches and the YOYO³ to 20.5 x 17.3 x 7.1, and both miss the carry-on box by exactly 3.3 inches. The YOYO³ is $499 and 14.8 lb; the Aer² is $549 and 14.3 lb. The Aer² is good from birth, with a full-flat recline, a baby net, a 17.6 lb basket, a one-hand fold and a 50 lb limit. The YOYO³ 6+ seat is from 6 months; for a younger baby you buy the YOYO 0+ pack or fit a car seat on YOYO³ adapters, and Stokke publishes no basket capacity or child limit. Owners say the Aer² goes into overhead bins on plenty of airlines but that the recline zipper is fiddly. How old the baby is decides it. With a newborn, the Aer² is cheaper in practice once those YOYO³ extras are counted; past six months, the YOYO³'s $50 saving and thinner fold become real.
Folded, the Stokke YOYO³ makes a 1.46 cu ft box to the Joolz Aer²'s 1.93 cu ft. Neither fits a 22 x 14 x 9 in carry-on sizer: the Joolz Aer² misses by 3.3 in and the Stokke YOYO³ by 3.3 in. The Joolz Aer² is 0.5 lb lighter by its maker's figure (14.3 lb to 14.8 lb). The Joolz Aer² is newborn-ready as sold; the Stokke YOYO³ needs a bassinet, insert or infant car seat for the first months.

Joolz
Joolz Aer²
~$549
Joolz calls its travel stroller IATA compliant; its own table puts the fold at 20.9 x 17.3 x 9.2 inches, past a 22 x 14 x 9 inch carry-on box on two sides, by 3.3 inches on the 14-inch one.
Best for: A from-birth seat in a small travel fold
Check price on Amazon
Stokke
Stokke YOYO³
~$499
The fold that made the category, now as YOYO³ under Stokke: 20.5 x 17.3 x 7.1 inches with the seat on, carried over the shoulder.
Best for: Frequent flyers with a child over six months
Check price on Amazon| Specification | Joolz Aer² | Stokke YOYO³ |
|---|---|---|
| Approx. price | ~$549 | ~$499 |
| Type | Compact & travel | Compact & travel |
| Weight | 14.3 lb | 14.8 lb |
| Newborn lift weight | 18.7 lb (4.4 lb more than the seat setup) | not published |
| Newborn option | Seat is rated from birth | Needs a bassinet, insert or car seat (sold separately) |
| Folded size | 20.9 x 17.3 x 9.2 in | 20.5 x 7.1 x 17.3 in |
| Carry-on check | Over by 3.3 in (2 sides over) | Over by 3.3 in |
| Folded box | 1.93 cu ft | 1.46 cu ft |
| Unfolded size | 33.5 x 17.7 x 41.9 in | 41.7 x 17.3 x 33.8 in |
| Fold | One-hand fold | not published |
| Basket | 17.6 lb / 4.5 gal | not published |
| Max child weight | 50 lb | not published |
| Recline | Full-flat recline | not published |
| Car seats | None listed by the maker | None listed by the maker |
| Warranty | 2 years | not published |
Joolz Aer²: what it gives up
- Folded size misses a 22 x 14 x 9 inch carry-on box on width and depth, though owners report it going into overhead bins on many airlines, with occasional forced gate checks
- Joolz's own pages give two slightly different folded lengths
- Compatible car seats not named
- The cot bundle is $848
- Owners report even the most upright seat setting leaves older babies slumping
Stokke YOYO³: what it gives up
- 17.3-inch folded width is over a 14-inch carry-on limit
- 6+ seat only from six months; newborn pack and adapters cost extra
- Stokke prints two different weights on the same page
- Without a stated child limit, you cannot plan when a toddler outgrows it
Full pages: Joolz Aer² · Stokke YOYO³