Search  for anything...
Therm-a-Rest

Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad

  • Based on 799 reviews
Condition: New
Checking for the best price...
$249.95 Why this price?

Buy Now, Pay Later

As low as $41.66 / mo
  • ā€“ 6-month term
  • ā€“ No impact on credit to apply
  • ā€“ Instant approval decision
  • ā€“ Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Sep 9
Order within 16 hours and 50 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Size: Large - 77 x 25 Inches


Style: Original Storage Bag


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 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

Size: Large - 77 x 25 Inches


Special Feature: Portable, Quick Deflation, Quick Inflation


Brand: Therm-a-Rest


Color: Lyons Blue


Product Dimensions: 77"L x 25"W x 4"Th


Specific Uses For Product: Sleeping Pad


Included Components: Sleeping Pad, Pump Sack, Storage Sack


Target Audience: Adult


Model Name: MondoKing 3D


Capacity: 1440 Pounds


Size: ā€ŽLarge - 77 x 25 Inches


Special Feature: ā€ŽPortable, Quick Deflation, Quick Inflation


Brand: ā€ŽTherm-a-Rest


Color: ā€ŽLyons Blue


Product Dimensions: ā€Ž77"L x 25"W x 4"Th


Specific Uses For Product: ā€ŽSleeping Pad


Included Components: ā€ŽSleeping Pad, Pump Sack, Storage Sack


Target Audience: ā€ŽAdult


Model Name: ā€ŽMondoKing 3D


Capacity: ā€Ž1440 Pounds


Product Care Instructions: ā€ŽWipe With Damp Cloth


Number of Items: ā€Ž1


Item Firmness Description: ā€ŽAdjustable


Item Thickness: ā€Ž4.25 Inches


Manufacturer: ā€ŽCascade Designs Inc.


Top Material Type: ā€ŽNylon


UPC: ā€Ž040818132258


Global Trade Identification Number: ā€Ž58


Item Package Dimensions L x W x H: ā€Ž29.17 x 11.61 x 7.09 inches


Package Weight: ā€Ž2.17 Kilograms


Item Dimensions LxWxH: ā€Ž77 x 25 x 4 inches


Brand Name: ā€ŽTherm-a-Rest


Warranty Description: ā€ŽManufacturerā€™s limited lifetime.


Suggested Users: ā€ŽUnisex-Adult


Part Number: ā€Ž


Model Year: ā€Ž2020


Style: ā€ŽOriginal Storage Bag


Sport Type: ā€ŽSporting Goods


Date First Available: September 30, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Best camping sleep for the money.
Size: XX-Large - 80 x 30 Inches Style: Original Storage Bag
The only thing I dislike about this, is that it didn't exist sooner. šŸ˜‚ 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. šŸ‘ It seems well built and can support my fat butt so I recon it will yours too, and be comfy. šŸ„° ... show more
Reviewed in the United States on September 6, 2024 by Raijiin
    • Most comfortable
Size: Large - 77 x 25 Inches Style: Original Storage Bag
Consider me the princess of the princess and the pea. Iā€™ve tried everything. I had settled on bringing an air mattress when camping. But I was frustrated by 2 things: the cold and having to inflate it multiple times. Never mind how big it is and the fact that I needed a separate tool to inflate them. I have tried many sleep pads from Amazon and with each one, I woke up multiple times during the night with soreness. I didnā€™t inflate this all the way the first time, and I didnā€™t know what all the fuss was. I added more air and WOW! It not only helps to keep your body heat from being sucked out, but the comfort is unreal. I never felt the ground and my joints felt supported. It is easy to inflate, let it do itā€™s thing, then add manually to your firmness preference. Itā€™s also super easy to deflate and it packs smallish. If you are having trouble getting comfortable camping, buy this. Itā€™s a game changer for car camping. ... show more
Reviewed in the United States on October 31, 2022 by Kathleen Humiston
    • Perfect Car Camping Mattress
Size: XX-Large - 80 x 30 Inches Style: Original Storage Bag
I have used this mattresses a couple of times, and it is now my favorite one for car camping. Since it is well insulated it keeps you warm in colder weather. The larger size means plenty of room, and it is comfortable. Seems very durable too, unlike the standard air mattress I used before that got multiple holes in it when the plastic got old after a few years. The Thermarests seem to last forever. ... show more
Reviewed in the United States on June 1, 2024 by Brent
    • The most comfortable sleeping pad I have used.
Size: XX-Large - 80 x 30 Inches Style: Original Storage Bag
The Mondoking is hands down the most comfortable sleeping pad I have had the pleasure of using. I backpack and camp a lot where I live in Colorado. With the weight it is by no means a backpacking pad, however, it is amazing while car camping with my family. If you don't have to hike too far, a few miles even, this is amazing. Anything beyond that, I would recommend more of a backpacking inflatable pad. It is SUPER comfy and SUPER warm. The coldest I've slept on it so far is about 18Ā°, zero cold spots whatsoever. I'll give an update after torture testing this when I winter camp later this year. Great buy! ... show more
Reviewed in the United States on November 4, 2024 by Cody Clement
    • ā€œINā€ valve is not one-way, as stated in instructions
Size: XX-Large - 80 x 30 Inches Style: Original Storage Bag
*** Update - ThermaRest got back to me and sent two replacements. The valves on the new pads work properly. The INFLATION section of the TwinLock Valve Instructions states that ā€œThe one-way IN valve will prevent air from escapingā€. This is not true. While inflating with the pump sack, when you get above approximately 50 % inflation, every time you pump air in, you can hear it come right back out after you stop pumping. This makes it very difficult to fully inflate. Also, if you put light pressure on the pad with your hand, you can hear the air coming out. I have two pads that I bought at the same time and both have the same issue. I emailed ThermaRest 9 days ago with this issue to see what theyā€™d say, but I still havenā€™t heard back from them. ... show more
Reviewed in the United States on July 19, 2024 by Dan
    • Comfort in Camping
Size: XX-Large - 80 x 30 Inches Style: Original Storage Bag
Easy to use and very comfortable sleep. It is quite large when rolled up, so if you're looking for something more compact this isn't it. The trade off for the large size is the comfort. No more cold nights and deflated air mattresses!!
Reviewed in the United States on June 7, 2021 by Amanda
    • Comfortable
Size: Large - 77 x 25 Inches Style: Original Storage Bag
This had a reputation of being very comfortable, and I agree. I have it on a cot in a back room of my apartment. I've slept on it a few times, and find it almost as comfortable as my bed. I sometimes travel cross-country on adventures, and sleep in the back of my car, a Subaru Outback. I haven't tried it in the car yet, but I'm sure it will be more comfortable than things I've used in the past! It fits in half of the rear cargo area, with will work with some tricks & adjustments for my height (6 ft.). It could easily be moved from my car to a tent. One trick to consider. don't overfill it. I found it much more comfortable after I took a bit of air out of it. ... show more
Reviewed in the United States on September 3, 2024 by j higbee
    • air leak after 3 times use and no support from company
Size: Large - 77 x 25 Inches Style: Original Storage Bag
I bought two Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad from Amazon.com on 6/25/2023. My wife and I have used them only for 3 times. It turned out that one sleeping pad is slowly leaking air. At night, before I was using it, I pumped air until it was a kind of firm and supportive. However, in the next day morning, the pad became not firm at all, and I can even touch from the top surface to the bottom without much force. I submitted my first request for replacement of the pad (it is still under warranty) at the company's web site on 12/23/2024 and there has never been replied by the company customer support personnel except the automatic reply. Then I submitted another same warranty request on 1/9/2025. Up to now, no reply at all. What a worst experience with this product and the company warranty supports. ... show more
Reviewed in the United States on January 15, 2025 by An Amazon Buyer

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...