Mountain Buggy
Mountain Buggy Nano V3
A lightweight everyday-and-travel value pick
- Stroller weight
- 13 lb
- Folded size
- 20 × 12 × 21 in
- Seat suitability
- From birth · up to 44 lb
- Recline
- Fabric sling seat, lie-flat to upright
- One-hand fold
- Yes
- Basket limit
- 11 lb
Why it stands out
Low weight, an included travel satchel and a lie-flat newborn-capable seat (with the cocoon accessory).
Overview
The Nano V3 is Mountain Buggy’s lightweight, budget-friendly option, updated with an adjustable leg rest and a strap-based reclining mechanism that reaches lie-flat without undoing side straps like earlier Nano generations.
At 13 lb it includes a travel satchel and works as a travel system with select infant car seats via built-in toggles, though newborn use still requires the separate Mountain Buggy cocoon accessory or a compatible car seat.
A review at Also Mom — which doesn’t state the exact Nano generation tested, though its listed 13 lb weight matches this V3 — praised the low weight and three-step carry-on fold.
CABIN FIT BY AIRLINE
| United | ✕ Too big for the standard bag box |
|---|---|
| Delta | ✕ Too big for the standard bag box |
| American Airlines | ✕ Too big for the standard bag box |
| Air Canada | ✕ Too big for the standard bag box |
| Southwest | ✕ Too big for the standard bag box |
Airline notes & sources
United: United says collapsible strollers can be stored in the cabin. Dimensions, aircraft and available space still apply. Standard strollers can be checked free at the gate; confirm any operating-carrier restrictions. Carry-on sizes ↗ · Traveling with children ↗
Delta: Delta publishes free stroller checking at the gate or counter. The reviewed child-baggage page does not explicitly confirm compact-stroller cabin admission. Ask Delta before relying on overhead storage. Carry-on sizes ↗ · Stroller policy ↗
American Airlines: American says collapsible strollers should be checked at the gate before boarding. A size match does not override that policy. One stroller and one car seat can be checked free, with only one of them at the gate. Carry-on sizes ↗ · Stroller policy ↗
Air Canada: Air Canada also lists a stroller-specific condition: collapsed diameter up to 25.5 cm and length up to 92 cm. This box-size comparison does not establish compliance with that separate rule. Confirm your configuration with Air Canada. Carry-on sizes and stroller condition ↗
Southwest: The standard carry-on dimensions are verified. We have not yet confirmed the stroller-specific cabin policy in this release; ask Southwest before relying on overhead storage. Official baggage policy ↗
Standard carry-on limits, not always a stroller-specific policy. Reviewed 2026-09-11. Check your operating carrier, aircraft and any bag or accessories.
The tradeoff
A 44 lb child-weight limit is lower than most of this shortlist, and one-hand fold is a "flick out" style, not an automatic fold.
Newborn use
Requires the separate Mountain Buggy cocoon accessory or a compatible infant car seat for newborn use; the seat itself is not newborn-ready alone.
What owners are saying
Owner comment · 2026-05-31
International traveler; exact child age not stated.
“I like that it lies totally flat for naps... The basket underneath is surprisingly spacious.”
Blog, descriptive overview · 2020-03-26
Blog overview rather than a first-person hands-on test.
Highlighted the full lie-flat sling seat as usable “right out of the box” for newborns, without needing an add-on bassinet.