Britax Aptana Second Seat - Sage Green | 2 sellers, live prices, prepared checkout

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• 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: 24 checked facts, research depth trimmed read, checked 2026-10-07T01:53:23.344Z, in the evidence pack.
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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. 24 checked facts, checked 2026-10-07T01:53:23.344Z. Research depth: trimmed read. Deep read: the store's own data and 6 outside pages (the store's own product page; maker page; manual; 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: CPSC and Health Canada recall searches returned no records for Britax Safe N Sound / Aptana Second Seat - Sage Green.

• identity: The product title is Britax Aptana Second Seat - Sage Green.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• age range: Britax's manual describes newborn to approximately 3 years; the store lists suitability from 6 months, so the sources disagree on starting age.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• fold: You cannot fold the Aptana with the bassinet, baby capsule or second seat on.. Source: https://www.britax.com.au/faq/britax-aptana (guide), read 2026-10-07T01:45:51.948Z.
• identity: Vendor is Britax Safe N Sound.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• what's in box: Box includes 1 x Second Seat, 1 x Canopy, 2 x Lower Adaptors, 1 x Arm Bar.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• weight limits: Britax's FAQ gives main-seat limits of 22 kg in single mode and 20 kg in tandem mode, and an 18 kg second-seat limit; the store gives 20 kg for the second seat, so the sources disagree on that limit.. Source: https://www.britax.com.au/faq/britax-aptana (guide), read 2026-10-07T01:45:51.948Z.
• identifiers: SKU is 39747 and GTIN is 9311742397473.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• warnings: Do not use this second seat with any other models of stroller.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• newborn use: The seat can be used with a generic newborn insert that has a wedge. The seat backrest must be at full recline at all times for infants.. Source: https://www.britax.com.au/faq/britax-aptana (guide), read 2026-10-07T01:45:51.948Z.
• description: The second seat transforms the Aptana stroller into a double.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• warnings: The second seat can only be used in the forward facing position, connected to the rear of the stroller.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• features: It has a lightweight yet durable frame.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• warnings: Do not overload the stroller as overloading will cause the stroller to tip backwards.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• features: It has a comfortable, padded seat with breathable fabrics.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• compatibility: The Britax Aptana second seat is designed to fit the Britax Aptana stroller.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• features: It has a secure 5-point harness.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• harness: Use the harness at all times.. Source: https://files-au-prod.cms.commerce.dynamics.com/cms/api/jcgqgwntbf/binary/ML4umk (manual), read 2026-10-07T01:45:41.066Z.
• features: It has quick attachment and removal for fuss-free setup.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• specifications: Dimensions are 50 cm (W) x 28 cm (D) x 60 cm (H).. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• specifications: Weight is 3.6 kg.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• specifications: Materials are a high-quality metal frame and padded fabric seat.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• suitability: The store lists suitability from 6 months up to 20 kg; Britax's manual describes newborn to approximately 3 years with an 18 kg maximum, so the sources disagree on age and weight suitability.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• safety: Designed to meet Australian safety requirements.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.
• warranty: 2 years manufacturer’s warranty.. Source: https://baby-little-planet.myshopify.com/products.json (listing), read 2026-10-06T20:29:14.451Z.

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 manual and the recall records of CPSC (United States) and Health Canada 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 seat fabric feel to the touch?
• Is the seat padding thick or thin?
• Does the finish or coating rub off over time?
• What tools are needed to attach the second seat?
• Does the second seat include a rain cover?
• What specific Australian safety standard does the seat meet?
• Does the second seat come with a padded seat liner?

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