Mockingbird Single-to-Double 3.0 vs Mompush Ultimate 3
The Single-to-Double 3.0 is 0.3 lb lighter. The Ultimate 3 lists for $49.01 less. The Ultimate 3 folds smaller (7.5 vs 9.0 cu ft).
Only the differences are shown.
| Mockingbird Single-to-Double 3.0 | Mompush Ultimate 3 | |
|---|---|---|
| List price | $549 | $499.99Lowest price |
| Weight | 28 lbLightest | 28.3 lb |
| Folded size | 18 × 25.5 × 34 in9.0 cu ft | 16.5 × 25 × 31.3 in7.5 cu ftSmallest fold |
| Open size | 33 × 25.5 × 40 in | 38.2 × 25 × 43.7 in |
| Seat holds up to | 50 lb | 50 lb |
| Child height up to | 42 in | Not listed |
| From birth? | Yes, with bassinet (sold separately) | Yes, with bassinet (sold separately) |
| Bassinet holds up to | 20 lb | 20 lb |
| Seat faces you or the world | Yes | Yes |
| One-hand fold | Yes | Yes |
| Stands when folded | Yes | Yes |
| Fits airline overhead bin | No | Not listed |
| Converts to a double | Yes | No |
| Basket | 25 lb, XL basket; seat-back and in-seat pocketsBiggest basket | 13.2 lb, Maker: 11.78-gal basket |
| Car seats | 50+ infant car seat models with the Car Seat Adapter (sold separately) | Not listed |
| Car seat adapters | Mockingbird Car Seat Adapter (50+ infant seats) | Car Seat Adapter for Ultimate 3 ($39.99): select Maxi-Cosi Mico AP/XP/30/Max 30 and Nuna Pipa/Pipa Lite |
| Folds with the seat on | Not listed | Yes |
| In the box | Frame, wheels, seat with canopy, LegShade and child bar (2nd Seat Kit 3.0 sold separately, $175) | Frame, seat, wheels, seasonal liner, belly bar, harness covers, rain cover, foot cover, cup holder (+ bassinet and mattress in With Bassinet version) |
| Sold as a travel system | Single-to-Double Stroller 3.0 + Bassinet Bundle ($699) | 'With Bassinet' 2-in-1 version $599.99 |
| Warranty | Not listed | 4 years |
| Released | 2026 | 2026 |
| Handlebar height | Adjustable | 40.94-43.7 in |
| Wheels and suspension | Never-flat wheels with all-wheel suspension; front wheels lock | Never-flat all-terrain wheels, 7.7 in front / 11.8 in rear, suspension (soft/firm modes per maker comparison table) |
| Canopy | Extendable UPF 50+, height-adjustable, with leg shade | Extendable UPF 50+ canopy with mesh vents, height-adjustable (2 settings) |
Mockingbird Single-to-Double 3.0
A single stroller that turns into a double when you add a second seat kit, aimed at families expecting a second child. Seat faces either way and has five recline positions.
- Grows from single to double with a second seat kit
- One-hand fold that stands on its own
- Reversible seat with 5 recline positions
- Newborn use needs a separately sold bassinet, insert or car seat adapter
- About 36 lb as a double
Single-to-Double 3.0 or Ultimate 3?
Answers come from each maker's published specs. Safety and health questions link to the agency or medical source.
Which is lighter, the Single-to-Double 3.0 or the Ultimate 3?
The Mockingbird Single-to-Double 3.0 weighs 28 lb, 0.3 lb less than the Mompush Ultimate 3 (28.3 lb).
Which folds smaller, the Single-to-Double 3.0 or the Ultimate 3?
The Ultimate 3 folds to about 7.5 cubic feet, versus 9.0 for the Single-to-Double 3.0.
Is the Ultimate 3 cheaper than the Single-to-Double 3.0?
Yes. The Ultimate 3 lists for $499.99 and the Single-to-Double 3.0 for $549, a $49.01 difference. Sale prices change often.
Can both be used from birth?
Single-to-Double 3.0: Yes, with bassinet (sold separately). Ultimate 3: Yes, with bassinet (sold separately).
Which one lasts longer?
Both seats hold up to 50 lb.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.