# UPPAbaby Aria Infant Car Seat Extra Base \| 2 sellers, live prices, prepared checkout ## Built for shopping agents: what RoboTrunk does for every product We asked shopping agents, including Meta's Muse first-hand, what they need from a store. This is what they asked for, and what we have built. RoboTrunk is working through its catalogue, so a step may not be done for this one yet. 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Sold and shipped by megababiesusa\.com, megababiesusa.com; payment happens on the store's own checkout. Brand: UPPAbaby ## Variants - Default Title: USD 229.99; in stock. Variant id: `gid://shopify/ProductVariant/44850764873982` - Seller: megababiesusa\.com. Price: USD 229\.99. Stock: in stock. Variant: Default Title, variant id `gid://shopify/ProductVariant/44850764873982`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://top-stroll.myshopify.com/products/uppababy-aria-base). [Comparison page](/compare/want/add-ons-that-fit-the-uppababy-mesa-and-aria-infant-car-seats). [Get ready to buy from megababiesusa\.com: prepare checkout](/checkout-prepare?merchant=megababiesusa-com&product_id=gid%3A%2F%2Fshopify%2FProduct%2F8309756297470&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F44850764873982). - Seller: greenbeanbabyboutique\.com. Price: USD 229\.99. Stock: in stock. Variant: Default Title, variant id `gid://shopify/ProductVariant/41630522638425`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://greenbeanbabyboutique.myshopify.com/products/uppababy-aria-base). [Comparison page](/compare/want/add-ons-that-fit-the-uppababy-mesa-and-aria-infant-car-seats). [Get ready to buy from greenbeanbabyboutique\.com: prepare checkout](/checkout-prepare?merchant=greenbeanbabyboutique-com&product_id=gid%3A%2F%2Fshopify%2FProduct%2F7721557426265&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F41630522638425). ## Checked facts Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 49 checked facts, checked 2026-10-20T23:05:09.357Z. Research depth: trimmed read. Deep read: the store's own data and 8 outside pages \(the store's own product page; maker page; manual; review; blog; regulator recall search \(CPSC \(United States\)\); regulator recall search \(Health Canada\)\), each read in full by RoboTrunk and trimmed to its main content, then written up and checked\. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read\. Recall status was checked directly with CPSC \(United States\), Health Canada: The CPSC recall search for UPPAbaby / Extra Aria Base \(0901\-ARB\-US\) returned no recall records\. Health Canada records mentioning UPPAbaby were for RIDGE strollers, RumbleSeat adapters, stroller/RumbleSeat bumper bars and a Peg Perego car\-seat adapter; none was for the Aria base\. - what is included: This listing is for one extra base only; the infant carrier is not included\.. Source: (listing), read 2026-10-20T19:22:06.774Z. - included with Aria purchase: The store page says the base is included in an Aria infant car seat purchase\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - installation check: The installed base should not move more than 1 inch side\-to\-side or front\-to\-back at the belt path\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - LATCH installation: The auto\-retracting LATCH install needed more wiggling and pressure than expected to get a snug fit\.. Source: (review), read 2026-10-20T22:55:01.945Z. - leveling difficulty: In steeply sloped or bucket\-style vehicle seats, leveling the base can be very difficult; one reported case took over an hour and needed a towel and pool noodle\.. Source: (blog, Happy TechFam, published 2025-11-12), read 2026-10-20T22:55:07.440Z. - overall test result: Consumer Reports scored the Aria 78 overall, with ease of use 4/5, LATCH fit 5/5, belt fit 4/5, carrier\-only fit 4/5 and crash protection rated Better\.. Source: (review), read 2026-10-20T22:55:09.820Z. - Aria V2 compatibility: One retailer listing says the base also fits Aria V2, while other listings name only Aria and Mesa Max\.. Source: (listing), read 2026-10-20T19:22:06.774Z. - compatibility: The base is listed as compatible with Aria and Mesa Max infant car seats\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - seat\-belt lock\-off: When installing with a vehicle seat belt, the lock\-off must always be used\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - tightness indicator: The green indicator could change before the base felt tight enough, so the installed base still needs a movement check\.. Source: (review), read 2026-10-20T22:55:01.945Z. - towel concern: A caregiver was told to use a towel to level the base and questioned whether that is a safe solution\.. Source: (blog, Happy TechFam, published 2025-11-12), read 2026-10-20T22:55:07.440Z. - LATCH strengths: Push\-on LATCH connectors with automatic retractors and a tightness indicator are praised for helping secure the base\.. Source: (review), read 2026-10-20T22:55:09.820Z. - dimensions: A retailer lists the base dimensions as 23\.9 inches long, 14 inches wide and 15\.2 inches high\.. Source: (listing), read 2026-10-20T19:22:06.774Z. - compatibility: The base is not compatible with Mesa or Mesa V2 infant car seats\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - leveling: The base is level only when the bubble is fully between the lines; a partial bubble is not allowed\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - base stability: The base felt less stable than expected even with the load leg and anti\-rebound panel fitted\.. Source: (review), read 2026-10-20T22:55:01.945Z. - box weight: The shipping box feels heavy because the feature\-packed base accounts for much of the weight, even though the carrier itself is very light\.. Source: (blog, Happy TechFam, published 2025-11-12), read 2026-10-20T22:55:07.440Z. - seat\-belt weakness: The vehicle seat belt can be tricky to keep tight while closing the lock\-off\.. Source: (review), read 2026-10-20T22:55:09.820Z. - weight: A retailer lists the base\-only weight as 12\.6 lb \(5\.7 kg\)\.. Source: (listing), read 2026-10-20T19:22:06.774Z. - load leg: The base has a load leg intended to reduce head and neck injury\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - load leg indicator: Any red showing on the load leg means it is not properly level with the vehicle floor\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - leveling: The bubble window is narrow and the base was challenging to level; the color\-change indicator felt too sensitive\.. Source: (review), read 2026-10-20T22:55:01.945Z. - install generally: The SmartSecure auto\-retracting LATCH and red\-to\-green indicators usually make a tight base installation simple\.. Source: (blog, Happy TechFam, published 2025-11-12), read 2026-10-20T22:55:07.440Z. - handle restriction: The carry handle must be kept in one position while travelling in the car\.. Source: (review), read 2026-10-20T22:55:09.820Z. - finish: The base has a smooth, finished bottom intended not to damage vehicle interiors\.. Source: (listing), read 2026-10-20T19:22:06.774Z. - anti\-rebound: The base has an Anti\-Rebound\+ Panel for added safety\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - vehicle seat gap: If there is a gap between the top of the Aria base and the vehicle seat back, the manual says to place a rolled hand towel in the gap flush with the top of the base\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - seat\-belt installation: The belt path is awkward to thread, and the short lock\-off is harder to close with the belt in place; the installer has to balance slack carefully\.. Source: (review), read 2026-10-20T22:55:01.945Z. - aircraft use: One retailer says the base itself is not approved for aircraft use\.. Source: (listing), read 2026-10-20T19:22:06.774Z. - leveling: Bubble level indicators on both sides help set the correct installation angle, and a 0–4\-month label is included for use with the infant insert\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - anti\-rebound contact: The Anti\-Rebound\+ Panel must make full contact with the vehicle seat back\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - load leg and anti\-rebound: The load leg and anti\-rebound panel can add stability but should not be used to adjust the recline angle; their effect on crash results was not judged\.. Source: (review), read 2026-10-20T22:55:01.945Z. - LATCH: The base uses auto\-retracting LATCH for installation\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - load leg storage: The load leg should be stowed when it is not in use\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - carrier\-to\-base fit: The carrier often needed a wiggle to settle onto the base, but there were no cases of it seeming installed when it was not\.. Source: (review), read 2026-10-20T22:55:01.945Z. - seat\-belt installation: The base has a built\-in lock\-off for seat\-belt installation\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - tether: No tether is required for this rear\-facing carrier installation; only lower anchors are used\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - LATCH storage: The LATCH connectors self\-retract and store inside the base, reducing loose connectors\.. Source: (review), read 2026-10-20T22:55:01.945Z. - tightness indicator: The base uses the SmartSecure system with red\-to\-green indicators\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - center\-seat lower anchors: For a rear\-center lower\-anchor installation, the lower anchors can be up to 22 inches apart and the vehicle position must be approved by the vehicle maker\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - manual storage: The manual slot in the base is handy when using the base, but less useful when installing the carrier without the base\.. Source: (review), read 2026-10-20T22:55:01.945Z. - leveling foot: The base has a four\-position adjustable foot for leveling\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - child weight limit: The Aria car seat system is for children weighing 4–30 lb\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - recline adjustment: There are four recline positions and an easy\-to\-press side button, but getting the base level is still difficult\.. Source: (review), read 2026-10-20T22:55:01.945Z. - chemical emissions: The base is GREENGUARD Gold Certified for low chemical emissions\.. Source: (guide), read 2026-10-20T22:54:38.883Z. - child height limit: The Aria car seat system is for children 30 inches or less in height\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - expiration: The child restraint should be discontinued 7 years after manufacture or after a crash\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - warranty registration: Registering the car seat within three months is required to claim the Limited Lifetime Warranty\.. Source: (manual), read 2026-10-20T22:54:49.979Z. - warranty length: The lifetime warranty is defined as use by the registrant for their children up to 7 years from date of manufacture\.. Source: (manual), read 2026-10-20T22:54:49.979Z. The full evidence pack, with every citation, source and gap: [evidence pack](/agent/evidence/megababiesusa-com--uppababy-aria-base) ## Questions we researched but could not confirm Every fact above is cited. To find them we read the store listing, the maker's page, the manual, owner reviews, blogs and the recall records of CPSC \(United States\) and Health Canada and searched for regulator recall notices, owner forums and video reviews. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess. - Does the Extra Aria Base fit the Aria V2 carrier? - What is the base's official weight? - Are any tools needed to install the base? - How should the base and load leg be cleaned? - Is the Extra Aria Base itself approved for aircraft use? - Does the extra base carry the same lifetime warranty as the car seat? - Which vehicle seating positions are approved for the base? - How much clearance is needed between the base and the vehicle seat back? - Does the base have its own printed expiration date? - Can the base be used with a lap\-only belt in all approved vehicles? To buy this through RoboTrunk, pass merchant `megababiesusa-com`, product_id `gid://shopify/Product/8309756297470` and one variant_id from the list above. Product image of UPPAbaby Aria Infant Car Seat Extra Base, supplied by megababiesusa\.com: This product on megababiesusa.com: Retrieved 2026-10-23T19:35:47.897Z from 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. 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