# Britax Seat Saver Waterproof Liner \| live price, prepared checkout ## Built for shopping agents: what RoboTrunk does for every product We asked shopping agents, including Meta's Muse first-hand, what they need from a store. This is what they asked for, and what we have built. RoboTrunk is working through its catalogue, so a step may not be done for this one yet. 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Sold and shipped by megababiesusa\.com, megababiesusa.com; payment happens on the store's own checkout. Brand: Britax ## Variants - Grey: USD 39.99; in stock. Variant id: `gid://shopify/ProductVariant/43733576188158` - Seller: megababiesusa\.com. Price: USD 39\.99. Stock: in stock. Variant: Grey, variant id `gid://shopify/ProductVariant/43733576188158`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://top-stroll.myshopify.com/products/britax-seat-saver-waterproof-liner). [Comparison page](/compare/want/add-ons-made-to-fit-britax-car-seats). [Get ready to buy from megababiesusa\.com: prepare checkout](/checkout-prepare?merchant=megababiesusa-com&product_id=gid%3A%2F%2Fshopify%2FProduct%2F7944166441214&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F43733576188158). ## 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. 51 checked facts, checked 2026-10-17T23:37:41.237Z. Research depth: trimmed read. Deep read: the store's own data and 7 outside pages \(the store's own product page; spec sheet; forum; 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: CPSC recall search returned no records for Britax / Seat Saver Waterproof Liner\. Health Canada's Britax records concern car seats and strollers, not this liner, so no recall applies to this exact model\. - included: One Seat Saver Waterproof Liner is included\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - identity: The store lists this exact variant as Grey with SKU S864800\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - weight: Britax's 2014 accessories sell sheet lists the liner at 0\.29 lb \(0\.13 kg\)\.. Source: (manual), read 2026-10-17T23:32:14.546Z. - safety and compatibility: Forum users treat the Britax liner as approved for Britax seats because Britax says it was crash\-tested for them; for other harnessed seats they say it may fit but has not been tested\.. Source: (review), read 2026-10-17T23:32:19.243Z. - feel: A hands\-on review describes the top layer as soft and quilted rather than crinkly plastic, with a tacky no\-slip underside\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - value: A review summary says customers consider it worth the money for protecting car\-seat fabric from diaper blowouts and accidents\.. Source: (review), read 2026-10-17T23:32:31.253Z. - warranty: The liner carries a one\-year manufacturer limited warranty\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - identity: The product's GTIN/barcode is 652182069810\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - dimensions: Britax's 2014 sell sheet lists product dimensions of 18\.3 x 18\.1 inches \(46\.5 x 46 cm\); the store lists 8\.9 x 7\.1 x 2\.1 inches, so the sources disagree\.. Source: (manual), read 2026-10-17T23:32:14.546Z. - heat and comfort: A forum user who used the Britax pad in a Boulevard during potty training reported no effect on fit or harness tightness but found it made the child very hot; they suggest sweaty children may do better without it\.. Source: (review), read 2026-10-17T23:32:19.243Z. - design: The review says the side walls are deeper than earlier versions and form a basin that contains spills better than flat pads\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - grip: The review summary says customers praise the bottom grip for keeping the liner in place and limiting messes\.. Source: (review), read 2026-10-17T23:32:31.253Z. - warnings: Keep the harness, buckle, belt paths and required labels unobstructed; stop using the liner if it shifts, interferes with restraint operation or becomes damaged\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - what it is: It is a removable, waterproof seat liner designed to fit into the seating area of a car seat\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - pack dimensions: The maker's sell sheet gives pack dimensions of 7\.0 x 10\.125 x 2\.0 in \(17\.8 x 25\.7 x 5\.1 cm\)\.. Source: (manual), read 2026-10-17T23:32:14.546Z. - safety: Forum responders caution that being same\-brand is not enough; the product must also install and work correctly without interfering with the seat\.. Source: (review), read 2026-10-17T23:32:19.243Z. - fit: The review reports the liner stayed flat and did not bunch behind the child's lower back through a week of use\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - absorbency: The review summary notes the liner is waterproof but has no absorbent material inside, so it contains rather than absorbs\.. Source: (review), read 2026-10-17T23:32:31.253Z. - compatibility caution: For a non\-Britax car seat or stroller, confirm the manufacturer permits an added liner before use\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - containment: Deep sides help contain liquids and crumbs and keep the car seat clean\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - care: Britax's 2014 sell sheet says machine wash and dry; store listings say machine wash on a delicate cycle and line dry, so the drying instructions disagree\.. Source: (manual), read 2026-10-17T23:32:14.546Z. - safety testing: Forum discussion notes there is no universal standard for aftermarket crash testing, but Britax is described as actually testing its approved accessories\.. Source: (review), read 2026-10-17T23:32:19.243Z. - fit and installation: The review fitted it in a Britax Boulevard ClickTight and found the crotch\-buckle cut\-out generously sized\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - use with diapers: The review summary says it works well with diapers and recommends using it with diapers during potty training for maximum protection\.. Source: (review), read 2026-10-17T23:32:31.253Z. - ease of cleaning: The entire liner lifts out for machine washing, making accident cleanup faster than removing the full car\-seat cover\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - moisture management: The waterproof design uses EZ\-Dry wicking fabric to pull moisture away from the child and keep the seating area dry and comfortable\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - UPC: The 2014 sell sheet lists UPC 6 52182 06981 0 for the Seat Saver Waterproof Liner\.. Source: (manual), read 2026-10-17T23:32:14.546Z. - compatibility: Forum users distinguish Britax\-listed approval from generic compatibility claims and would not assume another seat brand has been crash\-tested with this liner\.. Source: (review), read 2026-10-17T23:32:19.243Z. - thickness and safety: The review says it is thin enough not to create harness slack while still providing a barrier\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - fit: The review summary reports some customers found it does not fit certain models, including the Britax B\-Safe newborn bucket seat\.. Source: (review), read 2026-10-17T23:32:31.253Z. - not a full cover: It is a compact seating\-area liner, not a full vehicle\-seat mat or replacement car\-seat cover\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - grip: A textured bottom surface grips the car seat to prevent the liner slipping out of position\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - item number: The 2014 Britax sell sheet lists item number S8648500 for the Seat Saver Waterproof Liner\.. Source: (manual), read 2026-10-17T23:32:14.546Z. - weight: The review reports the liner weighs about 4\.6 ounces\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - drawbacks: The review summary lists possible poor fit and lack of absorbent material as the main drawbacks\.. Source: (review), read 2026-10-17T23:32:31.253Z. - not a full cover: The original approved car\-seat cover remains required\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - cleaning: The liner can be easily removed from the car seat and machine washed\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - comfort: In an 85°F two\-hour trip, the review reports the child stayed cool and did not get a sweaty back\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - care: Store listings say machine wash on a delicate cycle and line dry; Britax's 2014 sell sheet says machine wash and dry, so the drying instructions disagree\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - compatibility: Britax says the liner is crash\-tested and approved for use with all Britax car seats\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - absorbency: A 4 oz apple\-juice spill test was contained and the surface felt relatively dry within minutes\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - compatibility caution: Store data says fit with other brands is subject to the other manufacturer's instructions\.. Source: (listing), read 2026-10-17T19:35:52.669Z. - compatibility: It fits most brands of harnessed car seats and strollers\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - limits: The review notes that very large accidents can overflow the side barriers or saturate the liner\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - dimensions: The store lists dimensions of 8\.9 x 7\.1 x 2\.1 inches; Britax's 2014 sell sheet lists product dimensions of 18\.3 x 18\.1 inches, so the sources disagree\.. Source: (guide), read 2026-10-17T23:31:49.560Z. - durability and care: After three wash cycles the stitching and no\-slip backing held up, but a high\-heat dry changed the backing texture\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - care and durability: The review advises air\-drying because heat can degrade the waterproof backing, and cites a user whose backing disintegrated\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - compatibility: The review found the liner conformed to a competitor convertible seat and a stroller, though exact model fit was not guaranteed\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - user sentiment: The review says parents often call it a must\-have for potty training and that children do not notice it\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - limits: The review reports some parents saw liquid reach the seat during a major nap\-time accident, though it still protected the straps\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. - newborn fit: The review considers it less suitable for infant buckets where a liner might interfere with a snug newborn fit\.. Source: (blog, Happy TechFam, published 2026-01-10), read 2026-10-17T23:32:22.222Z. The full evidence pack, with every citation, source and gap: [evidence pack](/agent/evidence/megababiesusa-com--britax-seat-saver-waterproof-liner) ## Questions we researched but could not confirm Every fact above is cited. To find them we read the store listing, the spec sheet, owner forums, blogs, owner reviews and the recall records of CPSC \(United States\) and Health Canada and searched for the maker's page, the manual, regulator recall notices 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 crash\-test standard or protocol did Britax use for this liner? - What is the liner's thickness in millimetres? - Does the grey fabric or rubberized backing transfer colour or rub off? - Does it fit the Britax B\-Safe infant carrier without interfering with the harness? - Can it be tumble dried on low, or must it always be line dried? - What exact washing temperature and detergent does the sewn care label specify? - Has this liner been tested with a Chicco NextFit? - Can it be used with a belt\-positioning booster seat? - Are any tools needed to install or remove the liner? - How long does the waterproof backing last with regular washing? - Are other colours available besides grey? - Does the liner have any age, weight or height limits? - Has the liner been changed since the 2014 sell sheet? 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