Thule Spring Car Seat Adapter | Maxi Cosi / Nuna / Cybex | live price, 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. Where a step is done per product, the line ends with what is done for this product.

• Deep research: We read the maker's manual, independent reviews, video review transcripts and the store's own page, and publish each finding with its source and the date read. check_product returns them with a source for each. This product: 27 checked facts, research depth trimmed read, checked 2026-10-20T19:16:15.648Z, in the evidence pack.
• Receipts: Every published fact has a receipt showing its source quote. check_product and get_product return the checked facts that have one. This product: each checked fact listed below has one; the source quotes are in the evidence pack.
• Safety: check_product asks the product-safety regulators live (US CPSC, NHTSA and FDA, Health Canada, the UK's OPSS, Australia's ACCC) whether a recall names a product, listed here or not, and flags a match with its notice; a recall never blocks the buyer. This product: this page holds no recall result for it yet; check_product asks the regulators now.
• Recall watch: watch_recalls tells the buyer if a product bought here is recalled later.
• Second-hand listings: check_listing runs the same recall check on a second-hand listing someone found, and adds what the listing leaves out and the price new.
• The real price: The full price to the buyer's country, with shipping and tax, each part quoted from the store's policy or, where a part is not settled, what the total depends on: check_product and search_catalog take the buyer's country and postcode. This product: this store's price was read from its catalogue at 2026-10-24T19:31:58.346Z.
• A checkout that finishes: RoboTrunk lists only stores whose agent checkout it has verified. create_checkout prepares the order at the store; complete_checkout returns a link to the store's own checkout. The checkout can be finished in either of two ways: the person taps the link in their own browser, or their agent opens it and completes the checkout. RoboTrunk checks the store's total against a budget ceiling before it issues the link. Payment always happens on the store's own page, and RoboTrunk never holds the money. No store pays for placement; RoboTrunk may earn a commission from some stores via their affiliate programs.
• Markdown copy: Every page has a Markdown copy: this page's copy.
• Photos and ratings: Search results carry the product photo and, where the store's own page publishes one, its rating (search_catalog).
• Fit answers: check_fit answers whether a listing fits a car, pram or bottle, with the exact quote from the store's page, or says it is not known.
• Back-in-stock watches: watch_back_in_stock starts a watch on a listing the store shows as sold out; get_back_in_stock_watch shows when it is back in stock.
• Maker's manual: ask_product_manual answers from the maker's manual with the exact passage and page, or says the manual does not cover it.
• Tools and guide: Every tool and its description is at https://robotrunk.com/mcp; the guide is at /agents.md.
• Research from other stores: Coming soon: reading other stores' listings of the same product as new research sources.

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. 27 checked facts, checked 2026-10-20T19:16:15.648Z. Research depth: trimmed read. Deep read: the store's own data and 6 outside pages (the store's own product page; maker page; spec sheet; 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 search returned one Thule-related record (2012 Chariot bicycle trailers and conversion kits) and Health Canada lists Thule RideAlong bike seats, Camber/Range bike carriers, Tepui rooftop tents, Thule Sleek strollers and the Thule Sleek car seat adapter. None of these concerns the Thule Spring car seat adapter 11300410.

• what is included: The listing is for the adapters only; the car seat and the stroller are sold separately.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• identification: Structured product data on the store page gives brand Thule, SKU 11300410, GTIN 872299047932 and category Stroller Accessories.. Source: https://top-stroll.myshopify.com/products/thule-spring-car-seat-adapter-maxi-cosi (guide), read 2026-10-20T18:54:36.752Z.
• weight: The adapter set weighs 0.3 kg (about 300 g).. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• fitting compatibility: Thule publishes a car-seat-by-car-seat chart showing which seats are approved for Thule Spring (gen 1) and which for Thule Spring 2 (gen 2); some seats fit only one generation.. Source: https://www.thule.com/-/s/approved/std.lang.all/38/58/783858.pdf?rev=7.1 (manual), read 2026-10-20T18:54:39.575Z.
• installation: Installing the adapters takes no tools: the stroller's toddler-seat mounting hardware comes off with a button press, then the adapters press into the chassis.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• specs repeated by a store: A store listing repeats the maker's specs: weight 0.3 kg, colour black, country of origin China, compatibility with Thule Spring and Thule Spring 2.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• use: Purpose is to attach an infant car seat to the Thule Spring stroller so you can go from car to stroller.. Source: https://top-stroll.myshopify.com/products/thule-spring-car-seat-adapter-maxi-cosi (guide), read 2026-10-20T18:54:36.752Z.
• model and colour: Model number 11300410, supplied in black.. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• fitting compatibility: Maxi-Cosi Cabriofix is listed as approved only for Thule Spring (gen 1), not for Thule Spring 2.. Source: https://www.thule.com/-/s/approved/std.lang.all/38/58/783858.pdf?rev=7.1 (manual), read 2026-10-20T18:54:39.575Z.
• installation: The two adapters are marked L and R, so there is no guessing which side goes where.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• stroller compatibility: Fits both the Thule Spring and the Thule Spring 2.. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• fitting compatibility: Cybex Cloud G i-size is listed as approved only for Thule Spring 2 (gen 2).. Source: https://www.thule.com/-/s/approved/std.lang.all/38/58/783858.pdf?rev=7.1 (manual), read 2026-10-20T18:54:39.575Z.
• fit and security: Each adapter locks in with a loud, crisp click, and after fitting they could not be wiggled or pulled loose at all.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• country of origin: Made in China.. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• fitting compatibility: Joie Gemm/i-Gemm is listed as approved for both Thule Spring generations.. Source: https://www.thule.com/-/s/approved/std.lang.all/38/58/783858.pdf?rev=7.1 (manual), read 2026-10-20T18:54:39.575Z.
• car seat fit: Tested with a Maxi-Cosi Mico 30: the adapters guide the seat into place and it clicks in the same way.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• installation: The car seat clicks in and out of the adapters; no tools are mentioned for use.. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• identification: The spec sheet carries the UPC/EAN code 872299047932 for model 11300410.. Source: https://www.thule.com/-/s/approved/std.lang.all/38/58/783858.pdf?rev=7.1 (manual), read 2026-10-20T18:54:39.575Z.
• stability: Over cracked pavement, grass and cobblestones the car seat did not rattle or sway; it moved as one with the stroller.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• car seat compatibility: Works with popular infant car seats from Maxi-Cosi®, BeSafe®, Cybex® and Nuna®, with the full approved list in the fitting compatibility chart.. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• height: The car seat sits high enough on the adapters that you can reach the baby without much bending.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• manuals: The maker publishes fit-compatibility documents in English and German on the product page.. Source: https://www.thule.com/en-us/strollers/strollers-accessories/thule-spring-car-car-seat-adapter-maxi-cosi-_-11300410 (guide), read 2026-10-20T18:54:38.433Z.
• materials and finish: The brackets are high-grade nylon: light in the hand but stiff, with smooth surfaces and no rough edges or moulding marks.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• durability: The nylon is described as fatigue-resistant, so the locking mechanism is expected to stay crisp over many click-in cycles.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• drawback: It only works on the Thule Spring, so it cannot be shared with a stroller from another brand.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• drawback: Fitting requires taking off the stroller's standard fabric seat brackets first.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.
• warranty: The review argues that using the official Thule accessory avoids the warranty worries that third-party adapters can create.. Source: https://www.thebabyverse.org/thule-spring-maxi-cosi-car-seat-adapter-review-the-essential-link-for-a-seamless-travel-system/ (blog, Happy TechFam, published 2025-11-27), read 2026-10-20T18:54:42.443Z.

The full evidence pack, with every citation, source and gap.

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 spec sheet, blogs and the recall records of CPSC (United States) and Health Canada and searched for the manual, regulator recall notices, owner reviews, 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.

• How long is the warranty on this adapter?
• Can the Thule Spring be folded with the adapters left installed?
• Does the set include a storage bag or cover for the adapters?
• Do the adapters have to come off before the toddler seat can be refitted?
• Is the adapter sold in any colour other than black?
• Is there a maximum car seat weight the adapters are rated for?
• Does the adapter change how the stroller pushes or feels?

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.

• What RoboTrunk is
• Every tool, in your browser through WebMCP
• The tools and how to call them
• The stores you can buy from
• Every store's products
• Search every store at once