{"product_id":"serta-mattresses-king-500104181-1060","title":"Serta Cobalt Calm Extra Firm Mattress (King)","description":"This Cobalt Calm Extra Firm mattress by Serta Perfect Sleeper features CoolFeel™ Fabric with an Antimicrobial Mattress Protection®, Fiber layer, two layers of Serta® Support Foam, CoolTwist® Gel Memory Foam, Serta® Support Foam, and the 3-zoned Coil System with Serta® Balanced Support Foam. This mattress will bring all the support and comfort that you need to get a good night's sleep.","brand":"Serta","offers":[{"title":"Default Title","offer_id":51941303910692,"sku":"Cobalt Calm Extra Firm Mattress (King)","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0810\/5548\/2148\/files\/774980_1.jpg?v=1768866317","url":"https:\/\/www.kluvers.com\/products\/serta-mattresses-king-500104181-1060","provider":"Kluver's Appliance \u0026 Home Furniture","version":"1.0","type":"link"}