Thule Sleek Sibling Seat | live price, prepared checkout

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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. 30 checked facts, checked 2026-10-20T18:53:32.802Z. Research depth: trimmed read. Deep read: the store's own data and 12 outside pages (the store's own product page; maker page; manual; blog; review; 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: The CPSC search returned only a 2012 Chariot bicycle-trailer recall, and the Health Canada list contains a 2020 recall of Thule Sleek strollers (fall hazard) and a recall of the Thule Sleek Car Seat Adapter, plus bike seats, bike carriers and rooftop tents. None of the records names the Sleek Sibling Seat, so no recall applies to this seat itself.

• what it is: The sibling seat is a second seat that turns the Thule Sleek single stroller into a double stroller.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• comfort of second seat: The sibling seat is described as just as comfortable and adjustable as the main seat, turning the stroller into a double for growing families.. Source: https://www.anbbaby.com/blogs/articles/what-we-love-about-thule-sleek-a-versatile-city-stroller-anb-baby (blog, ANB Baby Store), read 2026-10-20T18:35:54.487Z.
• dimensions: The maker lists the sibling seat as 83 x 43.5 x 25.5 cm (L x W x H).. Source: https://www.thule.com/en-sk/strollers/strollers-accessories/thule-sleek-sibling-seat-_-11000212 (guide), read 2026-10-20T18:32:42.821Z.
• what is included: The manual states the sibling seat ships as a seat with rain cover plus upper and lower adapters.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.
• specification consistency: The maker's Spanish page gives the same 83 x 43.5 x 25.5 cm dimensions and 3.1 kg weight, with model number 11000208 for the Black on Black version.. Source: https://www.thule.com/es-cl/strollers/strollers-accessories/thule-sleek-sibling-seat-_-11000208 (guide), read 2026-10-20T18:32:47.092Z.
• single mode: The sources disagree on single-child use: MamaScrapelle says the sibling seat cannot be used in mono mode because of weight distribution, while Strollberry lists the second seat as usable in a single-child configuration.. Source: https://www.mamascrapelle.nl/review-thule-sleek-kinderwagen/ (blog, MamaScrapelle), read 2026-10-20T18:33:02.878Z.
• what you must buy: To carry two children you have to add the sibling seat and the adapters on top of the stroller, which comes set up for one child.. Source: https://kelseybang.com/2020/08/why-i-picked-the-thule-sleek-stroller-for-my-twins.html (blog, kelseybang.com), read 2026-10-20T18:33:59.426Z.
• size for an older child: Parent feedback gathered on this page says the second seat is too small for an older second child, with a seat depth that only suits a smaller child.. Source: https://strollberry.com/strollers/thule-sleek/ (review), read 2026-10-20T18:34:09.898Z.
• canopy and UV: The seat's extendable ventilated canopy has a peekaboo window and sun visor and the fabric is rated UPF 50+.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• weight: The seat alone weighs 3.1 kg.. Source: https://www.thule.com/en-sk/strollers/strollers-accessories/thule-sleek-sibling-seat-_-11000212 (guide), read 2026-10-20T18:32:42.821Z.
• age range: The seat is intended for children from about 6 months to 4 years.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.
• legroom in tandem: Legroom in tandem is limited and children can kick each other; the smoothest set-up was one child facing forward and the other facing the parent.. Source: https://www.mamascrapelle.nl/review-thule-sleek-kinderwagen/ (blog, MamaScrapelle), read 2026-10-20T18:33:02.878Z.
• harness: The five-point buckle is described as easy to use and secure, with padded harness sides that hug the child and adjust as they grow.. Source: https://kelseybang.com/2020/08/why-i-picked-the-thule-sleek-stroller-for-my-twins.html (blog, kelseybang.com), read 2026-10-20T18:33:59.426Z.
• tandem position: Owners report the sibling seat only fits in the lower, forward-facing position, which is usually where you would want the bigger child.. Source: https://strollberry.com/strollers/thule-sleek/ (review), read 2026-10-20T18:34:09.898Z.
• seat direction: The seat can be fitted facing the parent or facing forward.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• country of origin: The seat is made in Poland.. Source: https://www.thule.com/en-sk/strollers/strollers-accessories/thule-sleek-sibling-seat-_-11000212 (guide), read 2026-10-20T18:32:42.821Z.
• height limit: The maximum child height shown for the seat is 101 cm.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.
• recline in tandem: With the upper seat facing the parent, both seats can be reclined fully; in the other arrangement the upper seat only reclines a little.. Source: https://kelseybang.com/2020/08/why-i-picked-the-thule-sleek-stroller-for-my-twins.html (blog, kelseybang.com), read 2026-10-20T18:33:59.426Z.
• twins vs siblings: Several owners say the two-seat set-up suits twins better than a toddler and a baby, and that both seats would need to be the same size for twins.. Source: https://strollberry.com/strollers/thule-sleek/ (review), read 2026-10-20T18:34:09.898Z.
• recline: The backrest reclines in three positions for sleeping, resting and upright sitting.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• model number: The Midnight Black on Black version on the maker's page carries model number 11000212.. Source: https://www.thule.com/en-sk/strollers/strollers-accessories/thule-sleek-sibling-seat-_-11000212 (guide), read 2026-10-20T18:32:42.821Z.
• weight limits: The manual shows 15 kg + 15 kg in both approved and not-approved configurations, so that load is not approved for every seating arrangement.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.
• seat direction swapping: The seats are easy to turn around, so the children can face each other or both face forward depending on where you are going.. Source: https://kelseybang.com/2020/08/why-i-picked-the-thule-sleek-stroller-for-my-twins.html (blog, kelseybang.com), read 2026-10-20T18:33:59.426Z.
• bumper bar: The bumper bar swings to the side so you can lift the child in and out.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• compatibility: The only stroller the maker lists it as compatible with is the Thule Sleek.. Source: https://www.thule.com/en-sk/strollers/strollers-accessories/thule-sleek-sibling-seat-_-11000212 (guide), read 2026-10-20T18:32:42.821Z.
• approved configurations: The manual separates approved from not-approved seating configurations, so you should check your planned set-up before using two seats.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.
• what is included: A rain cover and the Thule Sleek Adapter Kit come with the sibling seat.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• storage: The seat and stroller should be stored dry, out of direct sunlight, to prevent mould and bacteria.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.
• seating area: The seat has a large seating area with generous sitting height and an adjustable footwell.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
• features and controls: The seat has a canopy with a zipped extension and ventilation, a peekaboo window, swing-away bumper bar, harness, recline handle, footrest adjust button and a seat release button.. Source: https://www.thule.com/-/s/approved/std.lang.all/14/33/621433.pdf?rev=9.1 (manual), read 2026-10-20T18:32:45.721Z.

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, blogs, owner reviews and the recall records of CPSC (United States) and Health Canada and searched for regulator recall notices, 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 warranty does Thule give on the sibling seat?
• Which seating positions on the Thule Sleek is the sibling seat approved for?
• What fabrics and padding is the sibling seat made from?
• Can the sibling seat be used together with a bassinet in one configuration?
• Does the sibling seat come with its own canopy or share the main seat's?
• How deep is the sibling seat's seat and how tall is its backrest?
• Is there a matching seat liner or footmuff for the sibling seat?
• Does the frame coating or paint wear or rub off with use?
• Is the sibling seat compatible with every Thule Sleek model year?
• Does the sibling seat arrive assembled or flat-packed?
• Can the stroller be folded with the sibling seat attached?

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