{"product_id":"therm-a-rest-mondoking-3d-self-inflating-sleeping-pad-xx-large-80x30-in-4-25-r-7-plush-couples-comfort","title":"Therm-a-Rest MondoKing 3D Self-Inflating Sleeping Pad XX-Large 80x30 in — 4.25\" R-7, Plush Couples Comfort","description":"\u003cp\u003e\u003cstrong\u003eThe Therm-a-Rest MondoKing 3D XX-Large is a 4.25-inch self-inflating camping mattress built for maximum warmth, stability, and couples-style comfort at basecamp or in an RV.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for car campers, expedition bases, and anyone wanting a plush, ground-level bed, this oversized pad blends thick thermal foam and air channels to deliver an R-value of 7.0. Its StrataCore construction sandwiches a continuous layer of insulating foam among alternating ridges of air and foam, creating a stable, cushioned surface that protects you from rocks, roots, and cold ground. The XX-Large 80 x 30-inch size offers generous length and width while pairing with a second MondoKing for a double-width sleep system.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the MondoKing 3D keep you warm in cold conditions?\u003c\/h3\u003e\n\u003cp\u003eThe pad achieves high insulation through its StrataCore foam layer and a substantial 4.25-inch thickness, which reduces conductive heat loss to the ground. An R-value of 7.0 makes it suitable for three-season use and many colder conditions where insulating performance matters most.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContinuous thermal foam layer for even warmth across the pad\u003c\/li\u003e\n  \u003cli\u003eAlternating air and foam ridges reduce cold spots and compressive heat loss\u003c\/li\u003e\n  \u003cli\u003e4.25 inches of cushioning creates an insulating air gap from the ground\u003c\/li\u003e\n  \u003cli\u003eWorks well with additional insulation like an underquilts on cold nights\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to set up, pack, and adjust firmness?\u003c\/h3\u003e\n\u003cp\u003eTwo one-way TwinLock valves speed inflation and deflation: one valve lets the compressible core draw air as the pad self-inflates, while the other offers a dedicated out port for fast deflation. Included is a PFAS-free stuff sack that doubles as a pump sack for breath-free inflation and quicker setup in camp.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwinLock system: separate inflate and deflate valves for efficient control\u003c\/li\u003e\n  \u003cli\u003eSelf-inflating foam core reduces manual pumping time\u003c\/li\u003e\n  \u003cli\u003eStuff sack can be used to add air without breathing directly into the pad\u003c\/li\u003e\n  \u003cli\u003eCompresses to a compact 31 x 10.3 inches for transport and storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow comfortable and stable is the MondoKing 3D for side-sleepers or couples?\u003c\/h3\u003e\n\u003cp\u003e3D construction includes vertical sidewalls that increase usable sleeping surface and prevent roll-off, while the plush stretch-knit top layer improves comfort and reduces noise. Because multiple MondoKing pads mate securely, two pads create a near-seamless double bed for couples who want a roomy, stable sleep platform.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3D vertical sidewalls expand usable width for rolling or sleeping angled\u003c\/li\u003e\n  \u003cli\u003eStretch-knit face fabric offers a softer, quieter sleep surface\u003c\/li\u003e\n  \u003cli\u003ePairs with another MondoKing mattress to form a wide double bed\u003c\/li\u003e\n  \u003cli\u003eThick foam reduces pressure points on hips and shoulders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the size, weight, and care details I should know?\u003c\/h3\u003e\n\u003cp\u003eThe XX-Large measures 80 x 30 x 4.25 inches inflated and rolls to 31 x 10.3 inches in the included sack, weighing about 5.5 pounds. Built in the USA and backed by a limited lifetime warranty, it’s designed for repeated use at campsites, in RVs, and as a comfortable guest mattress at home.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePacked dimensions: 31 x 10.3 inches; inflated: 80 x 30 x 4.25 inches\u003c\/li\u003e\n  \u003cli\u003eWeight: approximately 5.5 pounds—ideal for car camping and basecamp use\u003c\/li\u003e\n  \u003cli\u003ePFAS-free stuff sack included; made in the USA with limited lifetime warranty\u003c\/li\u003e\n  \u003cli\u003eFor best performance, top off with air and let sit 2–4 hours before first night\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Therm-a-Rest MondoKing 3D XX-Large is made for campers who prioritize comfort, insulation, and a hotel-like sleep surface at camp. It suits car campers, RV and boat owners, expedition basecamp teams, and anyone needing a roomy, durable sleeping pad for colder conditions or for pairing as a double bed. If you want a stable, warm, and easy-to-use pad that stores compactly and pairs with other MondoKing pads, this model delivers those benefits with premium construction and long-term support.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can two MondoKing 3D pads be joined for a double bed?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — two MondoKing pads of the same style mate securely to create a near-seamless double sleeping surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the MondoKing 3D warm enough for cold-weather camping?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: With an R-value of 7.0 and 4.25 inches of foam, it provides strong insulation suitable for many cold-season trips.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Therm-a-Rest","offers":[{"title":"Default Title","offer_id":59378425463132,"sku":"B0CQRVCFH8","price":388.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/5604\/9244\/files\/therm-a-rest-mondoking-3d-xxlarge-front-view.jpg?v=1791236039","url":"https:\/\/sportium.co.uk\/products\/therm-a-rest-mondoking-3d-self-inflating-sleeping-pad-xx-large-80x30-in-4-25-r-7-plush-couples-comfort","provider":"Sportium Sports And Outdoors","version":"1.0","type":"link"}