Infant Car Seat Base Size and Weight

What are the size and weight of infant car seat bases?

UPPAbaby Mesa / Mesa V2 Infant Car Seat Base (SKU 0262): The base weighs 9 lbs. Base-only dimensions are 14.5"W x 21.3"L x 10.3"H. PEG Primo Viaggio Extra Base: The base weighs 7.4 pounds and is about 22 inches long, 15 inches wide, and 12 inches deep. The base is compact enough to fit in smaller vehicles, similar to the Chicco KeyFit based on the reviewer's measurements. UPPAbaby Aria Infant Car Seat Base (SKU 0901-ARB-US): The base alone weighs 12.6 lbs (5.7 kg). The store page lists the base as 23.9 inches long, 15.2 inches high and 14 inches wide.

ProductWhyWeightSize
1. UPPAbaby Mesa / Mesa V2 Infant Car Seat Base (SKU 0262) sold by strolleria.comBase-only dimensions are 14.5"W x 21.3"L x 10.3"H.The base weighs 9 lbs. guideBase-only dimensions are 14.5"W x 21.3"L x 10.3"H. guide
2. PEG Primo Viaggio Extra Base sold by strolleria.comThe base weighs 7.4 pounds and is about 22 inches long, 15 inches wide, and 12 inches deep.The base weighs 7.4 pounds and is about 22 inches long, 15 inches wide, and 12 inches deep. blogThe base is compact enough to fit in smaller vehicles, similar to the Chicco KeyFit based on the reviewer's measurements. review
3. UPPAbaby Aria Infant Car Seat Base (SKU 0901-ARB-US) sold by strolleria.comThe base alone weighs 12.6 lbs (5.7 kg).The base alone weighs 12.6 lbs (5.7 kg). listingThe store page lists the base as 23.9 inches long, 15.2 inches high and 14 inches wide. guide

Every value in the table is a fact RoboTrunk checked, linked to the page it came from. A dash means no checked fact fills that cell. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live.

Written 2026-10-19T23:42:30.734Z.

This page is published by RoboTrunk, a store built for shopping agents.

The store named on this page sells the product and ships it. RoboTrunk is not
the seller and never holds the money.

Buying works in one path. RoboTrunk's tools prepare a checkout at that store,
then hand back a short-lived link. The person approves the total; once RoboTrunk
has checked the store's total against it, the person is given the checkout link to
tap in their own browser, or, if the person prefers and gives permission, their
agent may open the link and finish there, and payment always happens on the
store's own checkout page. RoboTrunk never takes the payment or sees a card.

Where the rest of this site is:

- /agent/story.md is what RoboTrunk is and how it works, in full.
- /agent/tools.json is every tool, its arguments and its answers.
- /agent/merchants is every store you can buy from through RoboTrunk.
- /products/ucp is every store's indexed products.
- /products/search is one search across every store, in plain words.