---
product_id: 661521010
title: "Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad"
brand: "therm-a-rest"
price: "R11738"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Therm A Rest"
url: https://www.desertcart.co.za/products/661521010-therm-a-rest-mondoking-3d-self-inflating-camping-sleeping-pad
store_origin: ZA
region: South Africa
---

# TwinLock dual valve system 7.0 R-value extreme insulation 4.25-inch plush thickness Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad

**Brand:** therm-a-rest
**Price:** R11738
**Availability:** ✅ In Stock

## Summary

> 🛌 Elevate your outdoor sleep game—because roughing it shouldn’t mean roughing up your rest!

## Quick Answers

- **What is this?** Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad by therm-a-rest
- **How much does it cost?** R11738 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/661521010-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 down to a compact 31x10.3 inches in a PFAS-free sack, balancing portability with premium comfort.
- • **Effortless Setup:** TwinLock valve system with separate inflation and deflation ports means camp setup and breakdown are lightning fast.
- • **Spacious & Stable:** XXL 80x30 inches with 3D vertical sidewalls maximizes usable sleep surface—perfect for solo or coupled adventures.
- • **Year-Round Warmth:** Industry-leading 7.0 R-value insulation keeps you cozy in the coldest conditions with StrataCore foam-air layering.
- • **Sleep Like Royalty:** Ultra-plush 4.25-inch thickness cushions every contour for unmatched comfort under the stars.

## Overview

The Therm-a-Rest MondoKing 3D is a premium self-inflating camping mattress designed for maximum comfort and insulation. Featuring a thick 4.25-inch foam layer with advanced StrataCore construction, it delivers a high 7.0 R-value for year-round warmth. Its TwinLock valve system simplifies inflation and deflation, while the XXL size and 3D vertical sidewalls provide a spacious, stable sleep surface. Lightweight yet durable, it compresses into a compact, eco-conscious storage sack, making it ideal for car camping, basecamps, and RV trips. Backed by a limited lifetime warranty and made in the USA, it’s the ultimate upgrade for campers who refuse to compromise on rest.

## 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: Very comfortable and lightweight. - Excellent Camping Mat
Review: Best camping sleep for the money. - The only thing I dislike about this, is that it didn't exist sooner. 😂 Easily the best camping air mattress I've ever used. It felt like sleeping in my own bed, because of the foam, it's great. I slept well, all night, on the ground, in the woods. No tossing and turning, and I felt rested in the morning. It's not loud or makes weird noises when you move around on it, and it feels soft to the touch instead of plastic or something. It will basically self inflate, but the bag it's stored in can be used as a pump, which is neat, but I bought the tiny pump for it. Inflates in under 10 minutes I think. It's a bit bulky, not for backpacking but if your worried about your back and want to camp, use this mattress, my 75yo dad approves. 👍 It seems well built and can support my fat butt so I recon it will yours too, and be comfy. 🥰

## 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
- XX-Large size measures 80x30x4.25 inches, 31x10.3 inches rolled, and weighs 5.5 pounds; stuff sack/pump sack included; limited lifetime warranty; made in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CQRVCFH8 |
| Additional Features | Anti-Deflate, Inflatable, Portable |
| Best Sellers Rank | #30,857 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #86 in Camping Air Mattresses |
| Brand | Therm-a-Rest |
| Brand Name | Therm-a-Rest |
| Capacity | 1440 Pounds |
| Color | Marine Blue |
| Construction Type | Self-Inflating Foam |
| Cover Material | Polyester |
| Customer Reviews | 4.4 out of 5 stars 901 Reviews |
| Fill Material | Foam |
| Global Trade Identification Number | 00040818140215 |
| Included Components | Pump Sack |
| Item Dimensions | 80 x 30 x 4.25 inches |
| Item Dimensions L x W x Thickness | 80"L x 30"W x 4.25"Th |
| Item Display Dimensions | 33 x 7 x 7 inches |
| Item Firmness Description | Adjustable |
| Item Thickness | 4.25 Inches |
| Item Type Name | Camping Mattress |
| Item Weight | 5.5 Pounds |
| Manufacturer | Cascade Designs Inc. |
| Manufacturer Part Number | 14021 |
| Manufacturer Warranty Description | Limited lifetime warranty. |
| Material | Polyester , Polyethylene (PE) |
| Material Type | Polyester, Polyethylene (PE) |
| Mattress Comfort Layer Material | Comfort Foam |
| Model Name | MondoKing 3D, XXL - Marine Blue |
| Model Number | 14021 |
| Number of Items | 1 |
| Number of Layers | 3 |
| Product Care Instructions | Spot Clean |
| Product Dimensions | 80"L x 30"W x 4.25"Th |
| Size | XX-Large - 80 x 30 Inches |
| Special Feature | Anti-Deflate , Inflatable, Portable |
| Specific Uses For Product | Sleeping Pad |
| Target Audience | Adult |
| UPC | 040818140215 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
| Weight Capacity Maximum | 1440 Pounds |

## Product Details

- **Brand:** Therm-a-Rest
- **Color:** Marine Blue
- **Included Components:** Pump Sack
- **Item Weight:** 5.5 Pounds
- **Material:** Polyester, Polyethylene (PE)
- **Product Dimensions:** 80"L x 30"W x 4.25"Th
- **Size:** XX-Large - 80 x 30 Inches
- **Special Feature:** Anti-Deflate, Inflatable, Portable
- **Specific Uses For Product:** Sleeping Pad
- **Target Audience:** Adult

## Images

![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad - Image 1](https://m.media-amazon.com/images/I/71+BNN310+L.jpg)
![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad - Image 2](https://m.media-amazon.com/images/I/91XIxr-N0ML.jpg)
![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad - Image 3](https://m.media-amazon.com/images/I/71GtkLVBbsL.jpg)
![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad - Image 4](https://m.media-amazon.com/images/I/51UsKPM6CdL.jpg)
![Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad - Image 5](https://m.media-amazon.com/images/I/51OtiXo+AyL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very comfortable and lightweight.
*by G***N on June 20, 2026*

Excellent Camping Mat

### ⭐⭐⭐⭐⭐ Best camping sleep for the money.
*by R***N on September 6, 2024*

The only thing I dislike about this, is that it didn't exist sooner. 😂 Easily the best camping air mattress I've ever used. It felt like sleeping in my own bed, because of the foam, it's great. I slept well, all night, on the ground, in the woods. No tossing and turning, and I felt rested in the morning. It's not loud or makes weird noises when you move around on it, and it feels soft to the touch instead of plastic or something. It will basically self inflate, but the bag it's stored in can be used as a pump, which is neat, but I bought the tiny pump for it. Inflates in under 10 minutes I think. It's a bit bulky, not for backpacking but if your worried about your back and want to camp, use this mattress, my 75yo dad approves. 👍 It seems well built and can support my fat butt so I recon it will yours too, and be comfy. 🥰

### ⭐⭐⭐⭐⭐ Amazing comfort
*by J***N on March 19, 2026*

This is one amazing air mattress. I have never liked sleeping on air mattresses. This one is a game changer. I am 300lbs and it was so comfortable I slept better on this than on my own bed. Five stars. Highly recommend!!!!

## 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

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-07-13*