Upseat Boost Toddler Booster Seat

The Upseat Boost Toddler Booster Seat is rated to 50 lb, is 13 in wide, and is 12 in deep, per Upseat. A padded toddler booster with a detachable 3 in platform, a 3-point harness and chair straps, for ages 18 months to 5 years.

  • 3-pointHarness
  • 50 lbUp to
  • $79.99List price

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How the Boost Toddler Booster Seat stacks up

Against the 26 boosters and space savers we track. The shaded band is where the middle half of them fall; the dot is this one.

Width13 in3rd narrowest of 11

Within the typical range for boosters and space savers (13 in to 15.1 in).

This one
12.6 inmiddle 14.92 in20.9 in
Depth12 in2nd smallest depth of 11

Below the typical range for boosters and space savers (12.6 in to 17.72 in).

This one
10.7 inmiddle 15.25 in21.7 in
Weight limit50 lb

Within the typical range for boosters and space savers (33 lb to 50 lb).

This one
30 lbmiddle 50 lb60 lb
Price$79.9913th lowest price of 13

Above the typical range for boosters and space savers ($24.99 to $40).

This one
$14.99middle $29.99$79.99

What sets the Boost Toddler Booster Seat apart

Measured against the 26 boosters and space savers we compare, from each maker's published specs.

  • 2nd smallest depthof the 11 boosters and space savers with it published: 12 in
  • Highest list priceof the 13 boosters and space savers that list it: $79.99
  • 3rd narrowestof the 11 boosters and space savers with it published: 13 in

Next to its closest matches

Stages and age range

As Upseat lists them.

Limits by mode
  • detachable platform adds 3 in of height for younger children
From18 months
Up to5 years
Weight limit50 lb

Footprint and fold

Sizes in the units the maker lists.

Size13 in wide × 12 in deep × 6 in high

Seat, harness and tray

Harness3-point

Listed features

  • Detachable platform for extra height
  • Includes 3-point harness and chair straps
  • Carry handle

Worth checking

  • Not for babies under 18 months
  • No tray

Where to buy the Boost Toddler Booster Seat

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: CPSC recall search.
  • Use and supervision: follow the maker's warnings on the product, and see CPSC's Safe Nursery guide. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Upseat Boost Toddler Booster Seat
TypeBooster or space saver
List price$79.99
Harness3-point
From18 months
Up to5 years
Weight limit50 lb
Limits by modedetachable platform adds 3 in of height for younger children
Size (open)13 W × 12 D × 6 H in

Compare the Boost Toddler Booster Seat with

How each closest rival differs from the Boost Toddler Booster Seat, from the makers' specs.

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Boost Toddler Booster Seat: questions answered

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

What are the Upseat Boost Toddler Booster Seat's age and weight limits?

Per the maker: from 18 months, to 5 years, up to 50 lb. By mode: detachable platform adds 3 in of height for younger children. Use and supervision: follow the maker's warnings on the product, and see CPSC's Safe Nursery guide. Check the label and the maker's instructions, and ask your pediatrician about your child.

What harness does the Upseat Boost Toddler Booster Seat have?

3-point, per the maker. Use and supervision: follow the maker's warnings on the product, and see CPSC's Safe Nursery guide. 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 boosters and space savers

Where these specs come from

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