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Cosco Kids Pronto Trend Belt-Positioning Toddler Booster Car Seat, Sonic Diamonds, Black

4.3 stars out of 1809 reviews
(4.3)|
1,809 ratings

Key item features

  • Belt-positioning booster: 40–100 lbs.
  • 2 seats in 1: easily converts to a backless booster
  • Washable seat pad
  • Adjustable headrest grows with your child
  • Integrated slide-out cup holder
  • Shoulder belt guides
  • Exceeds federal safety standards
  • Headrest pillow for additional comfort
Current price is $54.87
Price when purchased online
  • Free shipping
  • Free 90-day returns
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Comparison Chart:
Age GroupToddlerCosco Kids Pronto Trend Belt-Positioning Toddler Booster Car Seat, Sonic Diamonds, BlackChildSafety 1st Comfort Ride™ 3-in-1 Booster Car Seat, Seal Pup IIChildEvenflo Chase Plus 2-in-1 Harnessed Booster Car SeatToddlerGraco TurboBooster 2.0 Highback Booster Seat, Declan, GreyToddlerSafety 1st Store 'n Go Sport Booster Car Seat, Dusted Indigo, Toddler, UnisexInfantBaby Trend PROtect Folding High Back Booster Car Seat - Mars Red - RedToddlerCosco Kids Rise LX Toddler Booster Car Seat, Fossil BlackToddlerSafety 1st Store n Go Sport Booster Car Seat, Palm Springs, Toddler, UnisexToddlerGraco TurboBooster 2.0 Backless Booster Seat, Kent, Grey
Child Car Seat StyleHigh-Back Booster Car SeatsCosco Kids Pronto Trend Belt-Positioning Toddler Booster Car Seat, Sonic Diamonds, BlackHigh-Back Booster Car SeatsSafety 1st Comfort Ride™ 3-in-1 Booster Car Seat, Seal Pup IIHigh-Back Booster Car SeatsEvenflo Chase Plus 2-in-1 Harnessed Booster Car SeatHigh-Back Booster Car SeatsGraco TurboBooster 2.0 Highback Booster Seat, Declan, GreyHigh-Back Booster Car SeatsSafety 1st Store 'n Go Sport Booster Car Seat, Dusted Indigo, Toddler, UnisexHigh-Back Booster Car SeatsBaby Trend PROtect Folding High Back Booster Car Seat - Mars Red - RedBackless Booster Car SeatsCosco Kids Rise LX Toddler Booster Car Seat, Fossil BlackHigh-Back Booster Car SeatsSafety 1st Store n Go Sport Booster Car Seat, Palm Springs, Toddler, UnisexBackless Booster Car SeatsGraco TurboBooster 2.0 Backless Booster Seat, Kent, Grey
ColorSonic DiamondsCosco Kids Pronto Trend Belt-Positioning Toddler Booster Car Seat, Sonic Diamonds, BlackSeal Pup IISafety 1st Comfort Ride™ 3-in-1 Booster Car Seat, Seal Pup IIHuron BlackEvenflo Chase Plus 2-in-1 Harnessed Booster Car SeatDeclanGraco TurboBooster 2.0 Highback Booster Seat, Declan, GreyDusted IndigoSafety 1st Store 'n Go Sport Booster Car Seat, Dusted Indigo, Toddler, UnisexMars RedBaby Trend PROtect Folding High Back Booster Car Seat - Mars Red - RedFossil BlackCosco Kids Rise LX Toddler Booster Car Seat, Fossil BlackPalm SpringsSafety 1st Store n Go Sport Booster Car Seat, Palm Springs, Toddler, UnisexKentGraco TurboBooster 2.0 Backless Booster Seat, Kent, Grey
Car Seat Facing DirectionForward FacingCosco Kids Pronto Trend Belt-Positioning Toddler Booster Car Seat, Sonic Diamonds, BlackForward FacingSafety 1st Comfort Ride™ 3-in-1 Booster Car Seat, Seal Pup IIForward FacingEvenflo Chase Plus 2-in-1 Harnessed Booster Car SeatForward FacingGraco TurboBooster 2.0 Highback Booster Seat, Declan, GreyForward FacingSafety 1st Store 'n Go Sport Booster Car Seat, Dusted Indigo, Toddler, UnisexForward FacingBaby Trend PROtect Folding High Back Booster Car Seat - Mars Red - RedForward FacingCosco Kids Rise LX Toddler Booster Car Seat, Fossil BlackForward FacingSafety 1st Store n Go Sport Booster Car Seat, Palm Springs, Toddler, UnisexForward FacingGraco TurboBooster 2.0 Backless Booster Seat, Kent, Grey
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Customer ratings & reviews

4.3 out of 5 stars
stars1,809 ratings462 reviews
How item rating is calculated

Reviews summary

Pros
  • : Offers a budget-friendly option.
  • : Made with materials that are long-lasting and sturdy.
Cons
  • : Lack securement features to tie down fabric or device.
Generated by AI

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Showing 1-3 of 462 reviews

May 4, 2025
cameron
Item details
Color: Spindrift
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

wonderfully

oh it is so nice! Not at all hard to put together, my husband was reading the instructions to himself and by the time he was done i had it figured out! the only tricky part was finding the hooks that keep the cushions on. i absolutely love the pull out cup holder it really helps with space on vacations

Helpful?5UU2IMOBEFQC2910852772
Apr 11, 2025
London
Top Reviewer
Item details
Color: Sonic Diamonds
Multipack quantity: 1
3 out of 5 stars review

Verified Purchase

More cushion is necessary 100%!!

It's a really good car seat just needs more cushion on the seat.. why would you want your child to sit in this when traveling as your child's bottom will be so uncomfortable! I added so much more cushion to the seat. Please start putting cushion to the seat area! Thanks

Helpful?5UU2IMOBEFQC2910852772
reply from DorelJuvenileSupport

Thanks for your review! We would like to express our sincerest apologies for the cushion's insufficient support for your needs. We greatly appreciate your perspective.

Nov 11, 2025
Christin
Item details
Color: Sonic Diamonds
Multipack quantity: 1
3 out of 5 stars review

Verified Purchase

Booster seems safer than car seat, still uncomfy

I bought the car seat just for a quick one time use on Halloween night while my car was in the shop , and it did the job. But I would not recommend for a daily car seat. While it is VERY lightweight and very easy to install , the car seat itself just didn't seem stable enough to offer much protection for a child. And also the padding seems quite thin. Would definitely be uncomfortable for long rides or daily usage. Not bad for a spare or quick short term replacement though I guess. The booster seat function seems far more useful, and safe, than being used as a car seat.

Helpful?5UU2IMOBEFQC2910852772

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