--- product_id: 657140323 title: "Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches" brand: "therm-a-rest" price: "€ 450.58" currency: EUR in_stock: true reviews_count: 5 category: "Therm A Rest" url: https://www.desertcart.pt/products/657140323-therm-a-rest-mondoking-3d-self-inflating-camping-sleeping-pad store_origin: PT region: Portugal --- # Compact 26x10.3 inch pack size 7.0 R-value extreme insulation 4.25-inch plush thickness Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches **Brand:** therm-a-rest **Price:** € 450.58 **Availability:** ✅ In Stock ## Summary > 🛶 Camp in comfort, conquer the wild—sleep like a king every night! ## Quick Answers - **What is this?** Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches by therm-a-rest - **How much does it cost?** € 450.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/657140323-therm-a-rest-mondoking-3d-self-inflating-camping-sleeping-pad) ## Best For - therm-a-rest enthusiasts ## Why This Product - Trusted therm-a-rest brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pack & Go Ready:** Compresses to a compact 26x10.3 inches with included PFAS-free sack for easy transport. - • **Effortless Setup:** TwinLock valve system with separate inflate/deflate valves for quick camp transitions. - • **Year-Round Warmth:** 7.0 R-value StrataCore insulation keeps you cozy in the harshest conditions. - • **Sleep Like Royalty:** Ultra-plush 4.25-inch thickness cushions you like a cloud under the stars. - • **Maximized Comfort Surface:** 3D vertical sidewalls expand usable sleep area—no more rolling off the pad. ## Overview The Therm-a-Rest MondoKing 3D is a large, self-inflating camping sleeping pad measuring 77 x 25 inches with a plush 4.25-inch thickness. Featuring advanced StrataCore construction and a 7.0 R-value, it delivers superior insulation for year-round use. Its TwinLock valve system simplifies inflation and deflation, while the 3D vertical sidewalls maximize sleeping surface area. Lightweight and compressible to a compact size with an included pump sack, it’s designed for car camping, expeditions, and even home guest use. Made in the USA with a limited lifetime warranty. ## Description Sleep like camp royalty with the ultra luxurious Therm-a-Rest MondoKing 3D Self-Inflating Foam Camping Mattress. With couples in mind, the pad can be paired with a second MondoKing for a double sleeping pad. The pad offers an R-value of 7.0 for maximum year-round comfort thanks to thick thermal foam and StrataCore construction, which uses a continuous layer of thermal foam nestled between alternating ridges of air and foam (R-value measures the material’s ability to insulate; the higher the R-value, the warmer the sleeping pad). Perfect for car camping, expedition basecamps, RVs, and boats, it also makes an excellent guest bed at home. The stable mattress offers maximum stability, cushioning, and protection from rocks, roots, and uneven ground surfaces. All styles have dual valves that allow compressible foam core to expand and inflate when unpacked, and all styles mate perfectly with other Therm-a-Rest MondoKing mattresses with a similar style. Equipped with the TwinLock Valve the sleeping pad has dedicated "in" and "out" valves to make inflating and deflating the pad easier than ever. The MondoKing 3D is 4.25 inches thick inflated and include a stuff sack that can also be used as a pump sack (for easier, breath-free pad inflation). Made in the USA. Manufacturer’s limited lifetime warranty. Review: SUPER IMPRESSIVE Review: Amazing comfort ## Features - Camp like royalty with the MondoKing 3D, an ultra-comfy 4.25-inch thick sleeping pad with a stretch knit fabric layer for resting better under the stars - Utilizing two one-way valves, one for inflation and one for deflation, the TwinLock valve system makes setting up and breaking camp a breeze - 7.0 R-value insulates in the most extreme conditions using StrataCore construction that utilizes a continuous layer of thermal foam nestled between alternating ridges of air and foam - 3D construction creates vertical sidewalls to maximize useable sleep surface and comfort - StrataCore construction allows the pad to easily compress and pack away to a compact 26x10.3 inches in included PFAS-free storage sack - For best performance, inflate your self-inflating pad with air by breath or included pump sack and leave the mattress fully inflated for 2-4 hours before your first use - Large size measures 77x25x4.25 inches, 26x10.3 inches rolled, and weighs 4.38 pounds; stuff sack/pump sack included; limited lifetime warranty; made in the USA ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CQRVLKHB | | Additional Features | Anti-Deflate, Insulated, Portable | | Best Sellers Rank | #77,104 in Sporting Goods ( See Top 100 in Sporting Goods ) #202 in Camping Air Mattresses | | Brand | Therm-a-Rest | | Brand Name | Therm-a-Rest | | Capacity | 1440 Pounds | | Color | Marine Blue | | Colour | Marine Blue | | Construction Type | Foam and Air Chamber | | Cover Material | Polyester polyethylene (PE) | | Customer Reviews | 4.2 out of 5 stars 49 Reviews | | Fill Material | Foam | | Global Trade Identification Number | 00040818140208 | | Included Components | Pump Sack | | Item Depth | 10,8 cm | | Item Dimensions | 195.6 x 63.5 x 10.8 centimeters | | Item Dimensions L x W x Thickness | 195.6L x 63.5W x 10.8Th centimeters | | Item Display Dimensions | 81.3 x 27.9 x 22.9 centimeters | | Item Firmness Description | Plush | | Item Thickness | 10.8 Centimeters | | Item Type Name | Camping Mattress | | Item Weight | 1.99 kg | | Manufacturer | Cascade Designs Inc. | | Manufacturer Part Number | 14020 | | Material | Polyester Polyethylene (PE) | | Material Type | Polyester Polyethylene (PE) | | Mattress Comfort Layer Material | Comfort Foam | | Model Name | MondoKing 3D, L - Marine Blue | | Model Number | 14020 | | Number of Items | 1 | | Number of Layers | 3 | | Product Benefits | Luxurious, all-season comfort with excellent insulation | | Product Care Instructions | Spot Clean | | Product dimensions | 195.6L x 63.5W x 10.8Th centimeters | | Shape | Rectangular | | Size | Large - 77 x 25 Inches | | Special features | Anti-Deflate , Insulated, Portable | | Specific Uses For Product | Sleeping Pad | | Target Audience | Adult | | UPC | 040818140208 | | Water Resistance Level | Water Resistant | | Weight Capacity Maximum | 1440 Pounds | ## Product Details - **Size:** Large - 77 x 25 Inches - **Special features:** 3D Construction - **Brand:** Therm-a-Rest - **Colour:** Marine Blue - **Product dimensions:** 195.6L x 63.5W x 10.8Th centimeters ## Images ![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches - Image 1](https://m.media-amazon.com/images/I/71+BNN310+L.jpg) ![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches - Image 2](https://m.media-amazon.com/images/I/91XIxr-N0ML.jpg) ![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches - Image 3](https://m.media-amazon.com/images/I/51UsKPM6CdL.jpg) ![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches - Image 4](https://m.media-amazon.com/images/I/51OtiXo+AyL.jpg) ![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches - Image 5](https://m.media-amazon.com/images/I/81SdJoZKw-L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ SUPER IMPRESSIVE *by J***D on 19 January 2026* ### ⭐⭐⭐⭐⭐ Amazing comfort *by J***N on 19 March 2026* ### ⭐⭐⭐⭐⭐ Best mattress ever *by O***Z on 17 March 2026* ## Frequently Bought Together - Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad - Therm-a-Rest NeoAir Micro Electric Air Pump for Sleeping Pads ,Black - Therm-a-Rest Synergy Luxe Mattress Sheet --- ## Why Shop on Desertcart? 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