{"sources":[{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing","type":"listing","url":"https://alpkit-sonder.myshopify.com/products.json","retrieval_at":"2026-09-26T19:45:52.825Z","source_hash":"7172e2589789e02a8405de419ebd4039e2f530b42e22db3c001312208637c2e6","access_verdict":"permitted","robots_result":"allow"}],"summaries":[],"facts":[{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:pack:1:alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:fact:0","source_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing","field":"Material","ordinal":0,"value_number":null,"unit":null,"value_text":"It has a 5 mm-thick leather top, metal cantle plate, rails and rivets.","original_value":"a tough 5mm thick leather top is stretched from a thin metal cantle plate at the rear, over the rails to the nose piece and secured by rivets.","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:artefact:7172e2589789e02a8405de419ebd4039e2f530b42e22db3c001312208637c2e6","start":507,"end":649,"summary_id":null,"excerpt_id":null,"span_sha256":"b007a17a8034ddbda015536cc52ca1a55e612b083ee1e25b159ee706c12eb085","source_locator":"characters 507 to 649 of the retained text"}},{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:pack:1:alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:fact:1","source_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing","field":"Manufacture","ordinal":1,"value_number":null,"unit":null,"value_text":"It is manufactured in the UK.","original_value":"Manufactured in the UK","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:artefact:7172e2589789e02a8405de419ebd4039e2f530b42e22db3c001312208637c2e6","start":483,"end":505,"summary_id":null,"excerpt_id":null,"span_sha256":"ad3c8430668bbd755c0bd2d2dcf6515a9280887860a03c7abae1d7d46a8d36d0","source_locator":"characters 483 to 505 of the retained text"}},{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:pack:1:alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:fact:2","source_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing","field":"Colours","ordinal":2,"value_number":null,"unit":null,"value_text":"Black and Brown are named colour options.","original_value":"Black — Black [BB] — Black [OEM] [BB] — Brown","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:artefact:7172e2589789e02a8405de419ebd4039e2f530b42e22db3c001312208637c2e6","start":356,"end":401,"summary_id":null,"excerpt_id":null,"span_sha256":"a19e99160d74e71fbcb268130d79ab7fe5d7712a96f56f95076d99f60dd605c3","source_locator":"characters 356 to 401 of the retained text"}},{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:pack:1:alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:fact:3","source_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing","field":"Adjustment","ordinal":3,"value_number":null,"unit":null,"value_text":"Sag can be addressed by tightening a bolt in the nose piece.","original_value":"the leather can be re-tensioned by tightening a bolt in the nose piece.","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:artefact:7172e2589789e02a8405de419ebd4039e2f530b42e22db3c001312208637c2e6","start":1069,"end":1140,"summary_id":null,"excerpt_id":null,"span_sha256":"d5ed4584b69447c638e62f58950cd5651e40bebab0fff021bf471c8e8fda2a05","source_locator":"characters 1069 to 1140 of the retained text"}},{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:pack:1:alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:fact:4","source_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing","field":"Fit over time","ordinal":4,"value_number":null,"unit":null,"value_text":"The leather top wears to the shape of the rider's sit bones.","original_value":"This durable leather top eventually wears to the shape of the user’s ‘sit bones’","confidence":1,"citation":{"lineage_tier":"T1","artefact_id":"alpkit-com--brooks-b17-saddle-oem-standard-black:quick:source:0:listing:artefact:7172e2589789e02a8405de419ebd4039e2f530b42e22db3c001312208637c2e6","start":650,"end":730,"summary_id":null,"excerpt_id":null,"span_sha256":"c8609db8627e741393aeea4e8393723645e08f380f144340058948626b341d56","source_locator":"characters 650 to 730 of the retained text"}}],"facet_texts":[],"gaps":[{"id":"alpkit-com--brooks-b17-saddle-oem-standard-black:pack:1:gap:facets:0","source_type":"facets","url":null,"reason":"embeddings skipped in the store-data batch","detail":"the store-data batch makes no embedding call of any kind; 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