Baby Jogger Summit X3 Double vs Valco Ultra Duo S2
The Ultra Duo S2 is 7 lb lighter. The Summit X3 Double lists for $49.96 less. The Ultra Duo S2 folds smaller (6.4 vs 9.9 cu ft).
Only the differences are shown.
| Baby Jogger Summit X3 Double | Valco Baby Ultra Duo S2 | |
|---|---|---|
| List price | $799.99Lowest price | $849.95 |
| Weight | 37 lb | 30 lbLightest |
| Folded size | 15.3 × 32.5 × 34.3 in9.9 cu ft | 31 × 27.5 × 13 in6.4 cu ftSmallest fold |
| Open size | 53.1 × 32.5 × 40.5 in | 32.5 × 27.5 × 42 in |
| Seat holds up to | 50 lbHolds the most | 45 lb |
| Seat layout | Side by side | Side by side |
| Seats | 2 | 2 |
| Each seat holds up to | 50 lb | 45 lb |
| Total weight limit | 114 lb | Not listed |
| Open width | 32.5 in | 27.5 in |
| Infant car seats that fit | Infant car seat with Baby Jogger/Graco car seat adapter for summit X3 double (sold separately); number not stated | 1-2 infant car seats (adapter sold separately) |
| Seat setups | forward-facing only (except with infant car seat) | reversible seats (parent- or world-facing), independent recline |
| Standing board or bench | No | No |
| Child height up to | 44 in | Not listed |
| From birth? | Yes, seat lies flat | Yes, seat lies flat |
| Newborn add-on | Manual: suitable from birth to 5 years; maker advises consulting pediatrician before jogging with baby under 6 months; infant car seat via adapter | Near-flat recline with adjustable footrest 'built-in cocoon for newborns'; bassinet compatible; car seat(s) via adapter |
| Seat size | Not listed | 9 in wide, 17 in seat back |
| Seat recline | Near-flat | Near-flat |
| Seat faces you or the world | No | Yes |
| One-hand fold | Not listed | Yes |
| Fits airline overhead bin | Not listed | No |
| Converts to a double | No | No |
| Basket | 10 lb, Wide but shallow basket | 22 lb, Measures 25 x 9 x 24 inBiggest basket |
| Car seats | Not listed | Fits 1 or 2 infant car seats with adapters sold separately |
| Car seat adapters | Baby Jogger Car Seat Adapters for Summit X3 Double & Graco infant car seat ($49.99; shown 'currently not available') | Valco car seat adapter (sold separately) |
| Folds with the seat on | Not listed | Yes |
| Brake | Foot brake | Not listed |
| Warranty | Not listed | 1 year |
| Handlebar height | Fixed | 42 in |
| Wheels and suspension | Air-filled rubber tires, removable | Infinity wheels with built-in suspension |
| Canopy | Canopies with mesh vents and peekaboo windows | Three-stage extended, UPF 50+, magnetic peek-a-boo window |
Baby Jogger Summit X3 Double
A side-by-side jogging stroller for two children, built for runs and rougher paths.
- Air-filled tires for rough ground
- Each seat holds up to 50 lb
- Quick one-pull fold
- Heavy at 37 lb
- About 32.5 in wide, may not fit through narrow doors
Valco Ultra Duo S2
A side-by-side double with reversible seats, built to fold small enough for a car trunk.
- Seats face either direction
- Independent near-flat recline
- Folds with both seats attached, facing either way
- Heavy for a double at 30 lb
- Car seat adapters sold separately
Summit X3 Double or Ultra Duo S2?
Answers come from each maker's published specs. Safety and health questions link to the agency or medical source.
Which is lighter, the Summit X3 Double or the Ultra Duo S2?
The Valco Ultra Duo S2 weighs 30 lb, 7 lb less than the Baby Jogger Summit X3 Double (37 lb).
Which folds smaller, the Summit X3 Double or the Ultra Duo S2?
The Ultra Duo S2 folds to about 6.4 cubic feet, versus 9.9 for the Summit X3 Double.
Is the Summit X3 Double cheaper than the Ultra Duo S2?
Yes. The Summit X3 Double lists for $799.99 and the Ultra Duo S2 for $849.95, a $49.96 difference. Sale prices change often.
Can both be used from birth?
Summit X3 Double: Yes, seat lies flat. Ultra Duo S2: Yes, seat lies flat.
Which one lasts longer?
The Summit X3 Double seat holds more: 50 lb versus 45 lb.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

