BOB Revolution Flex 3.0 Duallie vs Valco Ultra Duo S2
The Ultra Duo S2 is 3.1 lb lighter. The Ultra Duo S2 lists for $50.04 less. The Ultra Duo S2 folds smaller (6.4 vs 12.4 cu ft).
Only the differences are shown.
| BOB Gear Revolution Flex 3.0 Duallie | Valco Baby Ultra Duo S2 | |
|---|---|---|
| List price | $899.99 | $849.95Lowest price |
| Weight | 33.1 lb | 30 lbLightest |
| Folded size | 40 × 30.5 × 17.5 in12.4 cu ft | 31 × 27.5 × 13 in6.4 cu ftSmallest fold |
| Open size | 48 × 30.5 × 45 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 | 100 lb | Not listed |
| Open width | 30.5 in | 27.5 in |
| Infant car seats that fit | 1 infant car seat with the BOB Duallie infant car seat adapter (adapter also gives a snack tray for the second child); Britax/BOB, Chicco, Graco adapters sold separately | 1-2 infant car seats (adapter sold separately) |
| Seat setups | Not listed | reversible seats (parent- or world-facing), independent recline |
| Standing board or bench | No | No |
| Child height up to | 44 in | Not listed |
| From birth? | With an infant car seat | Yes, seat lies flat |
| Newborn add-on | From birth only with an infant car seat on the Duallie adapter (walk only); stroller seat from 8 weeks walking, 8 months jogging | Near-flat recline with adjustable footrest 'built-in cocoon for newborns'; bassinet compatible; car seat(s) via adapter |
| Seat size | 12.5 in wide, 20 in seat back | 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 | No | No |
| Converts to a double | No | No |
| Basket | 10 lb, Extra-large basket plus 10 storage pockets | 22 lb, Measures 25 x 9 x 24 inBiggest basket |
| Car seats | Adapters for BOB Gear, Britax, Chicco and Graco infant seats, sold separately | Fits 1 or 2 infant car seats with adapters sold separately |
| Car seat adapters | BOB Duallie Infant Car Seat Adapter for Britax/BOB (B-Safe Gen2, Gen2 FlexFit, FlexFit+, B-Safe 35, 35 Elite, Ultra, Endeavours), Chicco, or Graco ($94.99 Britax version) | Valco car seat adapter (sold separately) |
| Folds with the seat on | Not listed | Yes |
| Brake | Foot brake | Not listed |
| Warranty | Not listed | 1 year |
| Released | 2019 | Not listed |
| Handlebar height | 34.5–48 in | 42 in |
| Wheels and suspension | Air-filled all-terrain tires, 16 in rear and 12 in front, locking swivel front | Infinity wheels with built-in suspension |
| Canopy | UPF 50+ canopies with reflective accents | Three-stage extended, UPF 50+, magnetic peek-a-boo window |
BOB Revolution Flex 3.0 Duallie
A side-by-side jogging double for parents who run or head onto rough paths with two children.
- Large air tires and a 9-position handlebar
- Each seat holds up to 50 lb
- Folded size drops to 33 x 30.5 x 12 in with wheels off
- Wide at 30.5 in
- Heavy at 33 lb
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
Revolution Flex 3.0 Duallie 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 Revolution Flex 3.0 Duallie or the Ultra Duo S2?
The Valco Ultra Duo S2 weighs 30 lb, 3.1 lb less than the BOB Revolution Flex 3.0 Duallie (33.1 lb).
Which folds smaller, the Revolution Flex 3.0 Duallie or the Ultra Duo S2?
The Ultra Duo S2 folds to about 6.4 cubic feet, versus 12.4 for the Revolution Flex 3.0 Duallie.
Is the Ultra Duo S2 cheaper than the Revolution Flex 3.0 Duallie?
Yes. The Ultra Duo S2 lists for $849.95 and the Revolution Flex 3.0 Duallie for $899.99, a $50.04 difference. Sale prices change often.
Can both be used from birth?
Revolution Flex 3.0 Duallie: With an infant car seat. Ultra Duo S2: Yes, seat lies flat.
Which one lasts longer?
The Revolution Flex 3.0 Duallie seat holds more: 50 lb versus 45 lb.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.