Diono Connect3 R 2-in-1 High-Back Booster | 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: 21 checked facts, research depth trimmed read, checked 2026-10-18T22:31:07.503Z, 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 2026-10-23T19:35:47.897Z.
• 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. 21 checked facts, checked 2026-10-18T22:31:07.503Z. Research depth: trimmed read. Deep read: the store's own data and 9 outside pages (the store's own product page; manual; other; maker page; regulator recall search (CPSC (United States)); regulator recall search (Health Canada); official safety test results (CREP, the Child Restraint Evaluation Program); official safety test results (NHTSA's Car Seat Ease of Use Ratings); official safety test results (ADAC's child seat test)), 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 returned no records for Diono. Health Canada’s open data returned Diono child car seat and booster seat recall records, but none named the Connect3 R 2-in-1 High-Back Booster, so no recall was found for this exact model. Official safety test results were looked up directly with CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings, ADAC's child seat test: CREP, the Child Restraint Evaluation Program (Australia and New Zealand): CREP’s published list of 216 tested seats contains no brand or name with Diono or Connect3R2in1HighBackBooster, and the list is every seat CREP has rated, so this exact model has not been rated by CREP. NHTSA's Car Seat Ease of Use Ratings (United States): NHTSA’s published ease-of-use ratings list includes eight Diono seats but none named Connect3, and the list is every seat rated there, so this exact model has not been rated by NHTSA. ADAC's child seat test (Germany, the UK and Europe): ADAC’s list since 2015 includes one Diono seat, the Radian 5 tested in 2016, but not the Connect3 R; the list is every seat tested there in that period, so this exact model has not been tested by ADAC. Not read, because they are member-only or refused RoboTrunk: Consumer Reports car seat ratings, Which? child car seat tests, JPMA certified products.

• conversion: The Connect3 R is a 2-in-1 high-back booster that converts to a backless booster with a shoulder belt positioning clip and carry handle.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• product category: Structured product data classifies it as Booster Seats.. Source: https://top-stroll.myshopify.com/products/diono-connect3-r-2-in-1-high-back-booster (guide), read 2026-10-18T22:13:17.085Z.
• manual availability: Diono provides a dedicated manual for the Connect3 R 2-in-1 High-Back Booster.. Source: https://diono.zendesk.com/hc/en-us/articles/35346768071059-Connect3-Booster-Manuals (manual), read 2026-10-18T22:13:19.193Z.
• installation videos: Diono’s installation video page lists the Connect3 R 2-in-1 High-Back Booster.. Source: https://diono.zendesk.com/hc/en-us/articles/35346437599635-Connect3-Booster-Installation-Videos (guide), read 2026-10-18T22:13:20.173Z.
• support topics: Diono’s Connect3 support category lists articles on box contents, three-across fit, booster readiness, cup holders, detachable back, LATCH use and washable cover.. Source: https://diono.zendesk.com/hc/en-us/categories/35354279597715-Connect3-2024-Present (guide), read 2026-10-18T22:13:21.089Z.
• three-across fit: Diono says it can fit three across with other Connect3 boosters, Radian convertible car seats and adult passengers in most mid-sized sedans and up.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• width: Diono describes the booster as less than 17 inches wide.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• product width: The stated product width is 16.3 in.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• width with cup holder: The stated product width with the cup holder is 18.1 in.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• product height: The stated product height is 23.6 to 28.7 in.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• depth as high-back: The stated depth as a high-back is 18.1 to 24.8 in.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• depth as backless: The stated depth as a backless booster is 15.4 in.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• seat weight: The stated seat weight is 10.8 lb.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• child weight range: It is suitable for children weighing 40 to 120 lb.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• child height limit: The maximum user height is 63 in.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• headrest and backrest adjustment: The combined head and backrest adjusts to 11 positions and has a carabiner to keep the shoulder belt in place.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• lap belt guides: The lap belt guides have a patented contour around them for buckle access.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• headrest shape: The SleepyCheek headrest is angled to support a child’s head and neck for sleeping.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• recline and seat foam: It has a 2-position reclining backrest and a 2TexFoam seat base.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• cup holder: It includes a removable cup holder that nests between Connect3 seats for three-across fit and stores under the booster when not in use.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.
• ventilation: The head and backrest have ventilation to help maintain airflow in the back seat.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-18T19:37:33.814Z.

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 manual, other pages about it, the maker's page, the recall records of CPSC (United States) and Health Canada and the safety test results of CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings and ADAC's child seat test and searched for regulator recall notices, owner reviews, blogs, 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 does the fabric feel to the touch?
• Is the padding thin or thick?
• Does the fabric or trim fade or rub off?
• What exactly comes in the box?
• Is the cover machine washable?
• Can it be installed with LATCH?
• Will it fit three across in my specific vehicle?
• Does it fit my vehicle without removing the headrest?
• What tools are needed to install it?
• How difficult is installation?
• What age range does Diono recommend?
• What safety standards or certifications does it meet?
• What warnings does Diono give for installation and use?
• What is the warranty?
• What parts tend to wear or break with daily use?

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