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safely.","confidence":0.95,"citation":{"lineage_tier":"T1","artefact_id":"strolleria-com--britax-upngo-backless-booster-car-seat-raven-black:quick:source:2:guide:artefact:0c60d7a412358225a9a70b45a3a395849e59af2dd1982010c345330d1dcd4084","start":794,"end":834,"summary_id":null,"excerpt_id":null,"span_sha256":"2c0061d3eed4682c00bc6d651ae864220000a568831f729af56e85b13cbba505","source_locator":"characters 794 to 834 of the retained text"}},{"id":"01M4SECCX8E2CJQ5E27PF0SM74","source_id":"strolleria-com--britax-upngo-backless-booster-car-seat-raven-black:quick:source:5:review","field":"minimum age advice","ordinal":9,"value_number":null,"unit":null,"value_text":"The maker states no minimum age for this booster; this reviewer's safety experts advise moving to a booster only after a child outgrows a forward-facing harnessed seat and is at least 4 years old.","original_value":"The maker states no minimum age for this booster; this reviewer's safety experts advise moving to a booster only after a child outgrows a forward-facing harnessed seat and is at least 4 years old.","confidence":0.7,"citation":{"lineage_tier":"T2","artefact_id":null,"start":null,"end":null,"summary_id":"01M4SEC0D1DVAZ5VEW1XW5SQNT","excerpt_id":null,"span_sha256":"562ae574249b713dd0b82cc0c30a7ba86b5e925589d15f86d7f2a19cfd27fccd","source_locator":null}},{"id":"01M4SECD8NWPBQ35Y2BP1299A4","source_id":"strolleria-com--britax-upngo-backless-booster-car-seat-raven-black:quick:source:2:guide","field":"shoulder belt guide","ordinal":10,"value_number":null,"unit":null,"value_text":"The shoulder belt guide helps keep the shoulder belt in the correct position as the child grows.","original_value":"Helps keep shoulder belt in the correct position, encouraging proper fitment as your big kid continues to grow.","confidence":0.95,"citation":{"lineage_tier":"T1","artefact_id":"strolleria-com--britax-upngo-backless-booster-car-seat-raven-black:quick:source:2:guide:artefact:0c60d7a412358225a9a70b45a3a395849e59af2dd1982010c345330d1dcd4084","start":855,"end":966,"summary_id":null,"excerpt_id":null,"span_sha256":"30ee5357b89f9037e64fa7a78764922f7d012e62a786205382ad3449cb639ad9","source_locator":"characters 855 to 966 of the retained text"}}],"facet_texts":[],"gaps":[{"id":"01M4SECE01Z7Z1PN0Q12MRCD5K","source_type":"facets","url":null,"reason":"embeddings skipped in the deep lane","detail":"the deep lane makes no embedding call; this pack has no facet texts and no vectors","recorded_at":"2026-10-13T01:08:10.121Z"},{"id":"01M4SECEBF2SZMWMATNJKP6J4S","source_type":"review","url":"https://www.reddit.com/r/Crosstrek/comments/1vd73na/child_booster_seat_recs/","reason":"not read","detail":"Reddit's public .json view of the thread: The server refused RoboTrunk's named fetcher (HTTP 403). 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It is never retried in a browser.","recorded_at":"2026-10-13T01:08:10.121Z"}],"facet_check":null,"evidence_depth":{"note":"Deep read: the store's own data and 10 outside pages (the store's own product page; maker page; manual; other; review; 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: A CPSC (United States) recall search for Britax and this model returned no recall records. A Health Canada open-data search returned 23 Britax records, including child car seat and booster seat recalls, but none names or identifies the UpNGo backless booster or its SKU, so no recall applies to this exact model on the evidence read. 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): The programme's published list of 216 rated seats includes many Britax Safe-N-Sound models but no UpNGo backless booster; the list is complete for seats CREP has rated, so this model has not been rated by CREP. NHTSA's Car Seat Ease of Use Ratings (United States): The published list of 126 rated seats contains several Britax boosters (Skyline, Highpoint, Grow With You) but no UpNGo; the list is complete, so this model has no NHTSA ease-of-use rating. These are ease-of-use ratings, not crash-test results. ADAC's child seat test (Germany, the UK and Europe): The published list of 527 tested seats includes many Britax Römer seats but no UpNGo; the list is complete for seats tested there since 2015, so this 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. Still open, with no evidence found: Which safety standard or certification does this seat carry?; Does the dark Raven Black fabric rub off or transfer onto clothing?; How thick is the seat cushion in inches?; What minimum age does Britax recommend for using this booster?; Are replacement covers or cup holders sold separately?; Does the cover shrink or pill after machine washing and drying?; Does the seat sit flat on deeply contoured vehicle seats?; Can two adults still sit beside it in a compact back seat?.","tier":"complex","depth":"trimmed_read","model":"deepseek-flash","recall":{"note":"A CPSC (United States) recall search for Britax and this model returned no recall records. A Health Canada open-data search returned 23 Britax records, including child car seat and booster seat recalls, but none names or identifies the UpNGo backless booster or its SKU, so no recall applies to this exact model on the evidence read.","status":"no_recall_found","regulators_asked":["CPSC (United States)","Health Canada"]},"sources":[{"url":"https://strolleria.myshopify.com/products.json","role":"the store's own data","retained":true},{"url":"https://strolleria.myshopify.com/products/britax-upngo-backless-booster-car-seat-raven-black","role":"the store's own product page","retained":true},{"url":"https://us.britax.com/shop/car-seats/upngo-backless-belt-positioning-booster-seat","role":"maker page","retained":true},{"url":"https://us.britax.com/support/instructional-videos-and-user-manuals","role":"manual","retained":true},{"url":"https://us.britax.com/support/frequently-asked-questions/belt-positioning-boosters","role":"other","retained":true},{"url":"https://www.consumerreports.org/babies-kids/car-seats/britax-upngo/m421481/","role":"review","retained":true},{"url":"https://www.saferproducts.gov/RestWebServices/Recall?format=json&Manufacturer=Britax","role":"regulator recall search (CPSC (United States))","retained":true},{"url":"https://recalls-rappels.canada.ca/sites/default/files/opendata-donneesouvertes/HCRSAMOpenData.json","role":"regulator recall search (Health Canada)","retained":true},{"url":"https://www.childcarseats.com.au/api/v1/child_car_seats/filter_data/retrieve?_format=json","role":"official safety test results (CREP, the Child Restraint Evaluation Program)","retained":true},{"url":"https://api.nhtsa.gov/childSeats?dataSet=ratings","role":"official safety test results (NHTSA's Car Seat Ease of Use Ratings)","retained":true},{"url":"https://www.adac.de/rund-ums-fahrzeug/ausstattung-technik-zubehoer/kindersitze/kindersitztest/","role":"official safety test results (ADAC's child seat test)","retained":true}],"reasoning":"low","embeddings":"skipped in the deep lane: no embedding call is made here","safety_tests":{"asked":["CREP, the Child Restraint Evaluation Program","NHTSA's Car Seat Ease of Use Ratings","ADAC's child seat test"],"walled":[{"reason":"Consumer Reports' car seat ratings pages declare themselves not free to read (isAccessibleForFree false, read 25-Sep-2026); RoboTrunk never reads past a paywall.","programme":"Consumer Reports car seat ratings"},{"reason":"Which? shows its child car seat test results to members only (read 25-Sep-2026); RoboTrunk never reads past a membership wall.","programme":"Which? child car seat tests"},{"reason":"JPMA's certified products list refused RoboTrunk's named fetcher (HTTP 403, 25-Sep-2026). It is not retried under another identity.","programme":"JPMA certified products"}],"results":[{"status":"not_tested","summary":"The programme's published list of 216 rated seats includes many Britax Safe-N-Sound models but no UpNGo backless booster; the list is complete for seats CREP has rated, so this model has not been rated by CREP.","programme":"CREP, the Child Restraint Evaluation Program (Australia and New Zealand)","source_url":"https://www.childcarseats.com.au/api/v1/child_car_seats/filter_data/retrieve?_format=json"},{"status":"not_tested","summary":"The published list of 126 rated seats contains several Britax boosters (Skyline, Highpoint, Grow With You) but no UpNGo; the list is complete, so this model has no NHTSA ease-of-use rating. These are ease-of-use ratings, not crash-test results.","programme":"NHTSA's Car Seat Ease of Use Ratings (United States)","source_url":"https://api.nhtsa.gov/childSeats?dataSet=ratings"},{"status":"not_tested","summary":"The published list of 527 tested seats includes many Britax Römer seats but no UpNGo; the list is complete for seats tested there since 2015, so this model has not been tested by ADAC.","programme":"ADAC's child seat test (Germany, the UK and Europe)","source_url":"https://www.adac.de/rund-ums-fahrzeug/ausstattung-technik-zubehoer/kindersitze/kindersitztest/"}]},"searched_for":["maker_page","manual","recall_notices","owner_reviews","blogs","forums","video_reviews"],"open_questions":["Which safety standard or certification does this seat carry?","Does the dark Raven Black fabric rub off or transfer onto clothing?","How thick is the seat cushion in inches?","What minimum age does Britax recommend for using this booster?","Are replacement covers or cup holders sold separately?","Does the cover shrink or pill after machine washing and drying?","Does the seat sit flat on deeply contoured vehicle seats?","Can two adults still sit beside it in a compact back seat?"]}}