MiaMily Carry On Luggage 18in (43ltrs) Slate Blue | 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: 45 checked facts, research depth trimmed read, checked 2026-10-05T15:23:09.693Z, 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 2026-10-26T19:58:24.270Z.
• 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. 45 checked facts, checked 2026-10-05T15:23:09.693Z. Research depth: trimmed read. Deep read: the store's own data and 10 outside pages (the store's own product page; maker page; spec sheet; other; 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: A CPSC recall search for MiaMily returned no recall records, and a Health Canada recall open-data search found no records mentioning MiaMily. No recall applies to this model.

• what it is: The luggage converts between a ride-on suitcase for children and a portable seat for adults, and can store a bag when not used as a seat.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• seat pack: An attached seat pack lets the luggage become a ride-on seat or storage space.. Source: https://kh9bh3-kb.myshopify.com/products/miamily-carry-on-luggage-18in-43ltrs-slate-blue (guide), read 2026-10-05T15:02:07.755Z.
• warranty: Luggage has a 5-year warranty covering manufacturing defects in materials and workmanship.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• seat mechanism: The seat can be secured down so the case looks like ordinary luggage or flipped up to form a seat, with an optional removable lap belt.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• appearance: The matte metallic finish looks understated enough for business travel as well as family trips.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• materials: The hard shell is polycarbonate, the built-in seat is polypropylene and the interior lining is polyester.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• warranty exclusions: The warranty does not cover normal wear and tear, airline damage, misuse or accidental damage, or damage during courier transit.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• belt quality: The optional lap belt felt flimsy and hard to trust; raising the pull handle once the child is seated was felt to keep them on better.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• stability: Joyu Wangderlust describes an aluminium frame and trapezoid base and cites a 100 kg maximum including the case's own weight; sources disagree on the limit's scope, as the maker's FAQ says the frame supports up to 220 lbs without stating that inclusion.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• dimensions and weight: Sources disagree: Baby Kingdom lists 38 (W) × 29 (D) × 48 (H) cm and 4.3 kg, while the maker's FAQ lists 51 × 38 × 29 cm including wheels and 4.2 kg; both list 43 litres.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• variant identification: The Slate blue variant is recorded with a shipping weight of 4300 g in the maker's structured variant data.. Source: https://miamily.com/products/carry-on (guide), read 2026-10-05T15:02:25.114Z.
• dimensions: The maker's FAQ lists dimensions including wheels of 51 × 38 × 29 cm; sources disagree, as Baby Kingdom lists 38 (W) × 29 (D) × 48 (H) cm.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• durability: The hard shell held up well to bumps, drops and general airport handling.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• wheels: The Japanese Hinomoto wheels roll smoothly and quietly even with the case full.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• warranty: The luggage carries a 5-year product warranty.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• specifications: Sources disagree: the maker's FAQ lists 51 × 38 × 29 cm and 4.2 kg, while Baby Kingdom lists 38 (W) × 29 (D) × 48 (H) cm and 4.3 kg; both list 43 litres.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• wheels: The four wheels glide so smoothly on airport tile that the case can spin a full 360 degrees unintentionally.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• interior: The interior is split into two zippered halves with a waterproof layer and YKK zips, making it easy to separate work items from child items.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• lock: It has a built-in universal TSA slider-style lock.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• lock: All MiaMily luggage has a TSA-approved combination lock preset to 0-0-0.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• capacity: The 43-litre interior has a compression system that helped fit several days of clothes for one adult plus child items.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• certification: The case is described as meeting Taiwan SGS quality standards and holding Taiwan BSMI certification.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• included: A seatbelt for the child is included.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• lock setup: To set the lock, the pin inside is shifted from A to B, a new 3-digit code set, then the pin moved back to A.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• cabin fit: No overhead-bin issues on domestic flights; it is described as carry-on compliant for most airlines.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• seat height: Used as a portable seat while queueing and at food courts, the seated height suits most tables and helps small children see.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• wheels: It has 360-degree spinner wheels.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• lock key: The TSA lock does not come with a key; TSA agents may use a universal key for inspection.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• handle: The adjustable handle has different stops, suits parents of different heights and is easy to steer one-handed.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• bag hook: The hook on the seat back carries extra bags, but loading it heavily on one side unbalances the case.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• finish: The exterior has an anti-scratch texture meant to protect the shell from most scratches.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• safety frame: The maker's FAQ describes an aluminium frame supporting up to 220 lbs and a wider base for stability; sources disagree on the limit's scope, as Joyu Wangderlust cites 100 kg including the case's own weight.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• carpet: It rolls well on tile but slows significantly on hotel carpet.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• weight: It is heavier than an ordinary carry-on, which the writer accepts for the seating safety and multi-use.. Source: https://joyuwangderlust.com/miamily-carry-on-review/ (blog, Joyu Wangderlust, updated 2026-04-19), read 2026-10-05T15:02:56.751Z.
• cabin fit: The retailer says the size fits in most overhead compartments.. Source: https://kh9bh3-kb.myshopify.com/products.json (listing), read 2026-10-04T20:14:34.174Z.
• child safety: Children must be able to sit unassisted and must always be supervised by an adult.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• boarding: The child has to get off before boarding; the case fits down the aircraft aisle but not with a rider on it.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• usage warning: The luggage should only be used on flat surfaces and never on escalators or stairs.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• interior hooks: Two latch hooks inside form part of the closure, get in the way when unzipping and can catch a finger.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• replacement parts: Missing or damaged components such as a safety belt, wheel, handle or buckle can be requested from customer service, and some parts may cost a fee if not a manufacturing defect.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• weight limit: The maker states the seat can carry up to 220 lbs, useful knowledge for older children.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• origin: MiaMily products are designed in Switzerland and assembled in China.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• stroller replacement: For children roughly 2 to 6 it can replace an airport stroller, though a stroller is still needed for naps.. Source: https://feathersandstripes.com/miamily-ride-on-suitcase-review-is-it-worth-it-for-kids/ (blog, Feathers and Stripes, updated 2026-08-04), read 2026-10-05T15:02:53.936Z.
• compatibility: The Hanging Organizer does not fit the Carry-On Original because of its centre-opening design; it fits the Carry-On Plus, Carry-On Seat Pro and all Check-In luggage.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.
• returns: Returns are accepted within 30 days for unused items in original packaging, and a restock fee applies to luggage.. Source: https://www.miamily.com/pages/faq-new (guide), read 2026-10-05T15:02:45.974Z.

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, other pages about it, 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.

• What thickness is the polycarbonate shell?
• Does the exterior coating or paint rub off with use?
• How should the shell and interior lining be cleaned?
• Is a dust bag or seat cushion included?
• What is the maximum child height that fits the seat?
• Are spare wheels or handles sold separately?
• Is the child seatbelt machine washable?
• What tools are needed to replace a wheel?
• Does the seat fold flat when it is not in use?
• Is the luggage approved for children under two years old?
• Does it fit under the seat in front on a plane?
• How does the anti-scratch texture feel to the touch?

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