UPPAbaby Alta Belt Positioning Booster Seat - Noa (Navy)

This item is discontinued.

From energetic elementary school kids to independent pre-teens, the ALTA delivers proper seat and belt positioning with style, comfort and ease.

Our SecureFit™ belt routing system with lap belt positioner ensures proper fit for the lap and shoulder belt while preventing submarining. Plus, rigid LATCH connectors secure the booster to the vehicle seat guaranteeing proper alignment.


  • SecureFit™ belt routing system
  • Unique lap belt positioner
  • Rigid LATCH connectors
  • Seven-position Active Support Headrest
  • Side Impact Pods on the side of the shell
  • Specialized foams in the headrest
  • Spacious design accommodates growing children
  • Dual armrests
  • Removable cup holder included
  • Removable, washable fabrics


  • Age Range: Approximately 6–10 years old
  • Weight/Height Capacity: Suitable from 40–100 lbs, and 38”–57” in height
  • Dimensions: 20” L x 19” W x 25.5”–33” H (height headrest in lowest and highest positions)
  • Seat Weight: 22 lbs
Product Reviews
out of 5.0
17 Reviews
Ratings Snapshot
of Reviewers
Branchville , NJ
Verified Buyer
Great booster!
May 19, 2024
Awesome high back booster! Easy installation and adjustment. Love the clips for added security.
Courtney G.
Wilmington, NC
Verified Buyer
Best Booster Seat
April 7, 2024
Best booster seat I have had with both of my kids. Fits perfect in the car and super easy to install.
  • Installation
Verified Buyer
Almost great
March 17, 2024
Great seat, seems comfortable, but the design of the seat base makes it very difficult to buckle the seatbelt.
Heather O.
Verified Buyer
Amazing quality seat!! We love it!!
January 1, 2024
We absolutely love this new seat. It is great quality. Solid structure. Easy to install. And is very comfortable for our daughter. We purchased this one and another brand, this one was by far the best decision!!!
  • Simple install
  • Great quality
  • Secure
  • Comfortable
  • Easily cleanable
Best Uses
  • I drive a Cadillac XT6 With bucket seats and it fits perfect.
  • My husband has a High country full size truck and it fits perfect!
  • Sometimes the seat belt gets caught in the top holder when trying to remove. But really makes the seat safer if you ask me.
Lubbock, Texas
Verified Buyer
CPST approved
November 2, 2023
We really like this seat! The added benefit of the crotch clip is huge, no more slumping down in the seat!
Mark L.
Washington, DC
Verified Buyer
Great booster for the Model Y
November 27, 2022
Our toddler constantly complained that his older car seat was too hot, tight and restrictive for long car rides. It became clear he was outgrowing it. We tested several booster seat models and were attracted to the Alta due to its rigid LATCH connector. The seatbelt-style connector used for our car seat permitted a bit too much wiggle; the LATCH keeps the seat firmly in place. In our Model Y, the seatbelt is a bit recessed into the seat and, while it initially seemed difficult to use, it has been quite effective and is no longer hard to locate or use. We've taken several long road trips with great results, a happier kid, in safety and style.
Customer Images
Verified Buyer
Overall nice seat
June 5, 2022
There are a lot of pros to the seat but the way it sits in my car it makes it difficult to reach/buckle the belt which is frustrating on a daily basis. My kid says it is comfortable and otherwise enjoys it.
Verified Buyer
Great seat!
March 22, 2022
My daughter loves how comfortable it is. It was easy to put together and install. We had originally installed it in the third row of our SUV (Hyundai Palisade) and the booster seat reaches the very edge of the seat. Per the manual, no overhang of the booster seat is allowed. If you have shallow seats this one might not work with your vehicle.
  • easy to use
  • comfortable
  • easy set up
  • The latch system makes it so you cannot adjust the seat left to right and it may be too close to the seatbelt too difficult for the child to buckle it themselves.
New Hampshire
Verified Buyer
Great carseat
March 15, 2022
We love this the head rest is slightly larger than most car seats and makes it a little bulky but it’s a overall great seat and the click connect is AMAZING
Verified Buyer
Beautiful and comfy
August 25, 2021
Easy to use, comfy and beautiful! Everything I'd expect from uppababy!
Isaiah D.
Winnoski, VT
Verified Buyer
Best booster! We have 3!
May 31, 2021
This booster is so great!! We have 3 in our family. 1 in my truck, 1 in my wife's suv, and 1 in my mother-in-laws car. My daughter LOVES it. So comfortable but with the huge ability to ensure that she is a big kid!!! Its so safe!
Verified Buyer
Overall Great Quality
April 28, 2021
We love the car seat, but like every family when we go on road trips it’s tough to find a seat that is conducive for them to rest their head without slouching. Most car seats don’t solve this problem, but still is a major need that I think most parents would agree with.
  • Great design
  • Premium Materials
  • Seat belt slot sometimes doesn?t keep the seat belt in.
Houston, Texas
Verified Buyer
Great Booster
March 22, 2021
Easy to get the seatbelt in the right position. Comfortable seat.
upstate NY
Verified Buyer
Beautiful Seat!
March 17, 2021
My 6 year old LOVES this seat! its very comfortable and he specifically picked the bright teal color and honestly its even more amazing in person! assembly qas quick and easy. We have been using it about a month now and have had to move it between cars for the time being and its really light and not terribly awkward to move. I would definitely recommend this. It just feels so nice and looks amazing! My son is also very happy with it! My one and only complaint is the location of the cup holder. it occasionally snags the seat belt and is kind of a pain. we have to swap the side it is on depending on what car the seat is in but honestly i feel like i shouldn't have to do that at this price point. but that is literally my only complaint and its really just me being nit picky
Best Uses
  • honestly this fits best in my sedan over my husbands jeep but this is the only booster we have so i don't have anything to compare it to so that might just be how all boosters are.
  • cup holder location/ design
Isaiah D.
Winooski, VT
Verified Buyer
December 10, 2020
My daughter LOVES this new booster seat! She is so much more comfortable and she loves the color!! I am a big fan as it is so easy to get her in the car now! And the safety overall is just so on point. The care that Uppababy put into this design is impeccable!
Verified Buyer
Great updated booster
December 1, 2020
I love this new take on a booster, feels safer then some of the other models out there. My son loves to used the big bog seat now!
Charlotte N.C.
Verified Buyer
We love it !
September 17, 2020
Suoer easy to install and it’s so sturdy, my daughter loves her new seat, she keeps us asking to take her for a ride
Customer Q&A