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Britax UpNGo Backless Booster

The Britax UpNGo Backless Booster is 17.1 in wide, weighs 3.1 lb, and has a booster weight limit of 120 lb, per Britax. A very light backless booster with a built-in carry handle and a shoulder-belt positioner.

  • $59.99List price
  • 120 lbBooster to
  • 3.1 lbSeat weight
  • 17.1 inWidth
See it on Britax's site

When does it expire?

Follow Britax

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UpNGo Backless Booster: key facts

  • The Britax UpNGo Backless Booster works as a booster from 40 to 120 lb and 46 to 63 in tall, per Britax.
  • Outgrown by height: "The top of the child’s ears must be below the top of the vehicle head restraint."
  • It installs with vehicle lap-shoulder belt.
  • Britax says it expires 10 years after the date of manufacture.
  • Britax says it isn't certified for aircraft.
  • It's 17.1 in wide at the widest point and weighs 3.1 lb.

From Britax's manual and published specs. Always follow the limits on your seat's labels.

How the UpNGo Backless Booster stacks up

Against the 65 booster seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Booster weight limit120 lbHighest booster limit of 64 booster seats

Within the typical range for booster seats (100 lb to 120 lb).

This one
100 lbmiddle 110 lb120 lb
Expiration10 years

Within the typical range for booster seats (8 years to 10 years).

This one
6 yearsmiddle 10 years12 years
Width17.1 in13th narrowest of 31

Within the typical range for booster seats (17 in to 18.6 in).

This one
10.2 inmiddle 17.3 in23.2 in
Weight3.1 lb3rd lightest of 42

Below the typical range for booster seats (6 lb to 13.2 lb).

This one
1.8 lbmiddle 9.8 lb20.9 lb
Price$59.9915th lowest price of 53

Within the typical range for booster seats ($55.99 to $159.99).

This one
$19.98middle $79.99$399.99

What sets the UpNGo Backless Booster apart

Measured against the 65 booster seats we compare, from each maker's published specs.

  • 3rd lightestof the 42 booster seats with it published: 3.1 lb
  • Width: 17.1 inin the middle half of the 31 booster seats that publish it (17 in to 18.6 in)

Next to its closest matches

  • Cosco Pronto! TrendNext to it, the UpNGo Backless Booster is 20 lb higher booster limit.
  • Evenflo GoTime LXNext to it, the UpNGo Backless Booster is 2.4 in narrower; 4 lb lighter.
  • Chicco GoFit PlusNext to it, the UpNGo Backless Booster is 10 lb higher booster limit; 0.1 in wider; 2.9 lb lighter.

Flying with the UpNGo Backless Booster

Britax's label: “This restraint is not certified for aircraft use, because aircraft do not have shoulder belts.” American lists “Booster seats with no approval label or shoulder harness” under seats and devices not approved for use on board (source).

What airlines say about car seats:

  • American: “Each ticketed customer is allowed 1 stroller and 1 car seat to be checked free of charge” “If an unoccupied, adjoining seat is not available, the gate agent will check the safety seat to your final destination.” Source
  • Alaska: “We will transport your child's car seat and stroller free of charge as checked baggage.” Source
  • JetBlue: “Checking a child safety seat will not count towards your checked baggage allowance and there is no fee assessed” Source
  • Spirit: “One (1) car seat will be accepted per child as checked baggage at no charge.” Source
  • Frontier: “strollers and car seats can be checked for free.” Source
  • Allegiant: “There is no charge for checking or gate checking one car seat per fare-paying passenger.” Source
  • Breeze: “Child seats may be carried on board the aircraft if a seat has been purchased for the Infant or Child” Source

Quoted from each airline's page as of 2026-11-02.

Listed features

  • Only 3.1 lb with a carry handle
  • Washable fabrics
  • Wide 120 lb limit

Worth checking

  • No head or side support
  • Minimum height is 46 in

Where to buy the UpNGo Backless Booster

Prices and availability change. We may earn a commission from some links.

good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: NHTSA recall search.
  • Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Britax UpNGo Backless Booster
TypeBooster
List price$59.99
Booster weight40–120 lb
Booster height46–63 in
Seat weight3.1 lb
Width17.1 in
Head ruleThe top of the child’s ears must be below the top of the vehicle head restraint.
Installationvehicle lap-shoulder belt
Load legNo
Anti-rebound barNo
RotatesNo
Aircraft labelNot certified for aircraft
No added flame retardantsYes
Expires after10 years

Compare the UpNGo Backless Booster with

How each closest rival differs from the UpNGo Backless Booster, from the makers' specs.

Ask the meadow

UpNGo Backless Booster: questions answered

From Britax's published specs, last checked 2026-11-06.

Will the Britax UpNGo Backless Booster fit three across or in a small car?

It's narrower than 59% of the boosters we track, at 17.1 in. The narrowest is the Mifold Comfort Grab-and-Go Booster at 10.2 in. Fit depends on your vehicle; check each seat's manual and your vehicle manual. Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Can you bring the Britax UpNGo Backless Booster on a plane?

Britax doesn't list it as certified for aircraft, so it can be checked as luggage but not used in the plane seat. See seats approved for planes.

UpNGo Backless Booster or Pronto! Trend: what's different?

By the makers' specs, the UpNGo Backless Booster has no added flame retardants (maker's claim). See every spec side by side.

Is it OK to buy a used UpNGo Backless Booster?

NHTSA publishes guidance on used car seats on its car seat page. Britax lists a lifespan of 10 years from manufacture for this model. Check the label and the maker's instructions, and ask your pediatrician about your child.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

More booster seats

Where these specs come from

Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.