--- title: "Havnby vs Tesla Mattress: FlatCore vs Model Y Air Mattress" canonical: "https://teslamattress.com/vs/havnby-vs-tesla-mattress" markdown_url: "https://teslamattress.com/vs/havnby-vs-tesla-mattress.md" language: "en" author: "Fredrik Mastouri" checked: "not-provided" content_updated: "2026-10-01" evidence_scope: "editorial-summary-not-directly-cited" source_scope: "visible page heading, answer and main content" --- Specialist vs official accessory # Havnby vs Tesla mattress: is the FlatCore worth $324 more? Tesla sold its Model Y Air Mattress for $225 and Havnby listed the FlatCore at $549 on 1 October 2026. The FlatCore is shaped deeper at the seatback end, has a built-in pump and comes with a 60-day trial. The Tesla mattress is the official fit for every Model Y except the Model Y L. By [Fredrik Mastouri](/about) Updated 1 Oct 2026 8 min read Havnby FlatCore Air-foam hybrid **List price** $549 Checked 29 Sep 2026 **Our rating** **83** Our rating is the editors’ judgement, not a measurement. It draws on the operator’s use of a Snuuzu Model Y since 2025 and of a Havnby FlatCore, and on published specs, prices and fit. We earn a commission from Snuuzu and Havnby links. Evidence: owner video and public sources. No lab test. [Full review of Havnby FlatCore](/reviews/havnby-autolevel) Tesla Model Y Air Mattress Official foam + air **List price** $225 Checked 16 Sep 2026 **Our rating** **78** Our rating is the editors’ judgement, not a measurement. It draws on the operator’s use of a Snuuzu Model Y since 2025 and of a Havnby FlatCore, and on published specs, prices and fit. We earn a commission from Snuuzu and Havnby links. Evidence: official specs, unknowns listed. No lab test. [Full review of Tesla Model Y Air Mattress](/reviews/tesla-model-y-air-mattress) This comparison uses seller specifications and attributed public sources. We have not completed a matched hands-on test of both products. Our rating is the editors’ judgement, not a sleep test. [How we rate](/methodology#rating) Quick verdict ## FlatCore buys a shaped profile, a built-in pump and a trial. Tesla costs $324 less. Choose the Havnby FlatCore when you want the seat slope filled by a shaped profile, a pump inside the mattress and a 60-day trial. Choose the Tesla Model Y Air Mattress when the $225 price, the official Tesla fit and a thin 8 cm profile matter more, and when you can accept that Tesla does not take back a used mattress. Choose Havnby FlatCore when You want the 7.5-inch seatback end and 3.1-inch trunk end to fill the seat slope. [All 4 reasons](/vs/havnby-vs-tesla-mattress#decision) Choose the Tesla Model Y Air Mattress when The $225 price and the $324 saving decide it. [All 4 reasons](/vs/havnby-vs-tesla-mattress#decision) On this page ## Specifications We read both product pages on 1 October 2026. The Havnby page was read with the US store setting. The Tesla figures come from the US Tesla Shop, the Model Y Air Mattress instruction sheet and Tesla’s shop support pages. Our [Tesla air mattress guide](/guides/tesla-air-mattress-guide) covers all four Tesla mattresses. | Factor | Havnby FlatCore | Tesla Model Y Air Mattress | | --- | --- | --- | | Price checked 1 October 2026 | **$549** | **$225**, in stock in the US Tesla Shop | | Vehicle fit | Model Y 2020–2024 and Model Y 2025–2026 variants | Every Model Y except the Model Y L | | Size | 193 × 132 cm (76 × 52 in) | 191 × 130 cm (74.4 × 50.4 in) | | Depth | 19 cm (7.5 in) at the seatback end, 7.9 cm (3.1 in) at the trunk end | 8 cm (3.12 in) | | Construction | Foam over a shaped air base | 3-inch high-density foam in a waterproof polyester shell | | Pump | Built-in 12V ABS pump | Separate air pump and adapter in the box | | Weight | 5.1 kg (11.2 lb) | Not published | | Returns | 60-day sleep trial from delivery | 30 days; 15% restocking fee if opened; no return after use | | Warranty | 3 years for orders from 1 June 2026 | 1 year for direct-ship accessories | | Next step Affiliate links: we may earn a commission at no extra cost to you. | [Review: Havnby FlatCore Foam Mattress](/reviews/havnby-autolevel) | [Read the review: Tesla Model Y Air Mattress](/reviews/tesla-model-y-air-mattress) | ## What this comparison can and cannot establish ### What the sources establish - Published size, depth and weight - Construction and pump type - Warranty and trial terms - Dated list prices ### What remains unknown - Fit in your exact car - Overnight comfort - Pump noise - Long-term durability ## What the extra $324 buys **$324** The FlatCore cost $549 and the Tesla Model Y Air Mattress cost $225 on 1 October 2026, before tax and shipping. Havnby lists a shaped profile, a pump inside the mattress, a fitted sheet, a storage bag and a 60-day trial for the extra money. Tesla sells a thin foam-and-air mattress with a separate pump, two repair patches and the official compatibility statement. The Tesla mattress is the low-cost choice for an owner who camps a few nights a year. The FlatCore is the choice for an owner who finds the seat slope uncomfortable on a flat pad. ## Shaped profile or flat pad Havnby FlatCore 7.5 in to 3.1 in, shaped Havnby makes the FlatCore thicker at the seatback end and thinner at the trunk end, so that it fills the step of the folded seats. Havnby publishes no measured angle. Tesla Model Y Air Mattress 3.12 in, one even layer Tesla states that the mattress fits across the folded rear seats and the trunk. Its 8 cm profile follows the cargo floor and leaves the most headroom of the two. Havnby FlatCore product image supplied by Havnby. Tesla product image. Tesla excludes the Model Y L, which has its own mattress. **Model Y L owners** Neither mattress lists the Model Y L. Tesla sells a separate Model Y L Air Mattress, and Havnby sells a separate FlatCore for the Model Y L. ## Pump and setup Havnby FlatCore Built-in 12V pump, about 80 s Havnby states about 80 seconds to inflate and about 90 seconds to deflate. The pump stays inside the mattress. Tesla Model Y Air Mattress Separate pump, 12 V socket Tesla puts an air pump and an adapter in the box. The instruction sheet shows the pump on a 12 V socket. Tesla recommends the pump for the first inflation, because the first self-inflation can be slow. **Timings are not like for like** Havnby gives its timings in text. Tesla’s instruction sheet shows timer icons without text, so we do not compare them as seconds. ## Returns and warranty Havnby FlatCore 60-day trial, 3-year warranty Havnby lets you sleep on the mattress for up to 60 days after delivery and then return it. An opened return can cost a condition fee of $10 to $30, plus return shipping. Tesla Model Y Air Mattress 30 days, no return after use Tesla takes back unopened accessories within 30 days. Opened and unused items have a 15% restocking fee. Used items cannot be returned. Direct-ship accessories have a one-year warranty, and the mattress is not named in Tesla’s warranty table. The operator owns a FlatCore Model Y and a FlatCore Solo. His [Havnby Solo vs Full Size video](https://www.youtube.com/watch?v=xqTR1f3YSSY) (the operator’s YouTube channel, 15 July 2026) shows both mattresses in a Model Y. It gives no measurement. Our owner experience covers the Havnby side only. ## Four reasons for each ### Choose Havnby FlatCore when - You want the 7.5-inch seatback end and 3.1-inch trunk end to fill the seat slope. - You want the 12V pump inside the mattress instead of a separate pump. - You want a 60-day trial, because Tesla does not take back a used mattress. - You want a three-year warranty instead of Tesla’s one-year accessory warranty. ### Choose the Tesla Model Y Air Mattress when - The $225 price and the $324 saving decide it. - You want Tesla’s own compatibility statement for every Model Y except the Model Y L. - You want the 8 cm profile for the most headroom. - You want two repair patches and a carry bag in the box from Tesla. ## Confirm the year range and the return rules **Affiliate links.** We may earn a commission at no extra cost to you. Check the final total before you pay. [Affiliate disclosure](/disclosure) ### Havnby 10% off `AWD` **Cart-tested 16 Sep 2026** The code page shows the full cart test. [See Havnby price and terms](/discounts/havnby) ### Tesla We have no partner code for Tesla. The link opens the seller page. For Havnby, pick the Model Y year range and confirm the delivered total. For Tesla, confirm that your car is not a Model Y L and read the return rules before you open the box. [Read the Tesla Model Y Air Mattress review](/reviews/tesla-model-y-air-mattress) [Read the Tesla air mattress guide](/guides/tesla-air-mattress-guide) ## Frequently asked questions Is Havnby better than the Tesla mattress? Havnby lists more: a shaped 7.5-to-3.1-inch profile, a built-in pump, a 60-day trial and a three-year warranty. The Tesla Model Y Air Mattress costs $324 less and has Tesla’s own fit statement. Which mattress cost less on 1 October 2026? The Tesla Model Y Air Mattress, at $225 in the US Tesla Shop. Havnby listed the FlatCore at $549. Both prices are before tax and shipping. Do both fit the Model Y Juniper? Tesla states that its mattress fits every Model Y except the Model Y L. Havnby sells a FlatCore variant for the 2025–2026 Model Y. Neither mattress is for the Model Y L. Can I return the Tesla mattress after I sleep on it? No. Tesla does not take back used items. Opened and unused items have a 15% restocking fee within 30 days. Havnby gives a 60-day sleep trial, with a condition fee for an opened return. Which mattress leaves more headroom? The Tesla mattress, at 8 cm (3.12 in). The FlatCore is 19 cm (7.5 in) at the seatback end and 7.9 cm (3.1 in) at the trunk end. ## Sources **[Havnby FlatCore listing](https://havnby.com/products/flatcore-hybrid-support-mattress-for-tesla-model-y) havnby.com, product page, US store** Checked 1 Oct 2026 **[Havnby returns page](https://havnby.com/pages/returns-policy), [refund policy](https://havnby.com/policies/refund-policy) and [warranty page](https://havnby.com/pages/warranty) havnby.com** Checked 1 Oct 2026 **[Tesla Model Y Air Mattress](https://shop.tesla.com/product/model-y-air-mattress) shop.tesla.com, US store** Checked 1 Oct 2026 **[Model Y Air Mattress instructions](https://digitalassets-shop.tesla.com/image/upload/v1718142009/content/dam/tesla/manuals/Model_Y_Air_Mattress_Installation_Instructions.pdf) Tesla, PDF** Checked 1 Oct 2026 **[Tesla Shop returns](https://www.tesla.com/support/shop/returns-cancelations) and [Tesla Shop warranty](https://www.tesla.com/support/shop/warranty) tesla.com** Checked 1 Oct 2026 **[Havnby Solo vs Full Size](https://www.youtube.com/watch?v=xqTR1f3YSSY) YouTube, the operator’s channel** Published 15 Jul 2026 We did not measure fit, slope, warmth or durability for either mattress. By [Fredrik Mastouri](/about). Page revised 1 Oct 2026. We have not performed a controlled comfort or durability test. [How we review](/methodology) Keep researching ## Follow the full evidence trail ### Full reviews - [**Havnby FlatCore** $549 · checked 29 Sep 2026 Our rating **83**](/reviews/havnby-autolevel) - [**Tesla Model Y Air Mattress** $225 · checked 16 Sep 2026 Our rating **78**](/reviews/tesla-model-y-air-mattress) ### Related head-to-heads - [**Snuuzu vs Havnby** $899 vs $549](/vs/snuuzu-vs-havnby) - [**Havnby vs NovaPads** $549 vs $239](/vs/havnby-vs-novapads) - [**Snuuzu vs Tesla Model Y Air Mattress** $899 vs $225](/vs/snuuzu-vs-tesla-mattress) - [**Havnby FlatCore vs CloudCore** $549 vs $399](/vs/havnby-flatcore-vs-cloudcore) ### Guides and method - [**Read the Tesla air mattress guide**](/guides/tesla-air-mattress-guide) - [**Is Havnby legit?**](/faq/is-havnby-legit) - [**How we review** Evidence levels and Our rating](/methodology) - [**All comparisons** Every head-to-head](/vs) By Tesla Mattress Guide Page last revised 1 Oct 2026