{"product_id":"serta-perfect-sleeper-x-knox-firm","title":"Perfect SleeperX Knox Firm","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eFor those that prefer a classic, quilted feel—featuring \u003c\/span\u003e\u003cb\u003e5 support zones\u003c\/b\u003e\u003cspan\u003e for full-body spinal alignment with \u003c\/span\u003e\u003cb\u003eresponsive coils\u003c\/b\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cb\u003egraphite-infused memory foam\u003c\/b\u003e\u003cspan\u003e, plus cooling technology.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan class=\"s1\"\u003eMattress Foundations are sold separately.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"s1\"\u003eMattress thickness is 13.5 inches.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Serta","offers":[{"title":"Twin XL","offer_id":45955519250657,"sku":"TXL Knox Firm","price":1099.0,"currency_code":"USD","in_stock":true},{"title":"Full","offer_id":45955519283425,"sku":"4\/6 Knox Firm","price":1249.0,"currency_code":"USD","in_stock":true},{"title":"Queen","offer_id":45955519316193,"sku":"5\/0 Knox Firm","price":1399.0,"currency_code":"USD","in_stock":true},{"title":"King","offer_id":45955519348961,"sku":"6\/6 Knox Firm","price":2099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/6607\/6897\/files\/24_Serta_PerfectSleeperX_QuiltedPDP_FullRoom_L1KnoxFirm_2000x2000_32bbfd2c-5db7-4ba2-af1a-f98308e5bcdc.jpg?v=1732982271","url":"https:\/\/www.mattresswarehouseflint.com\/products\/serta-perfect-sleeper-x-knox-firm","provider":"Mattress Warehouse Flint","version":"1.0","type":"link"}