Large Portable Insulated Slow Cooker

By wonderbag


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This portable slow cooker is an analog solution that helps you cut down on the energy needed to make stews, soups, and other meals. And it’s easy to take with you on picnics, while camping, or use at home. First bring your soup, stew, or other meal to boil like you normally would, then place the heated pot in the bag. wonderbag will retain the heat and finish cooking it.

  • Materials: Poly-cotton blend exterior, repurposed foam chip insulation
  • Care: Spot wash or machine wash on delicate cycle
  • Includes one large slow cooker bag and a recipe booklet
  • Instructions: Bring food to a boil by conventional cooking methods, let simmer, then place your pot with lid into your wonderbag. Place the wonderbag top on top of your lidded pot. Pull firmly on drawstring, and begin slow cooking process. Do not open the bag until ready to serve, as opening the bag releases essential cooking heat. If bag is opened before cooking is finished, bring back to a boil and return to the bag
  • Slow cooks and keeps food hot for up to 12 hours
  • No electricity required, allows for worry-free slow cooking
  • Light and portable design makes it great for tailgating or camping
  • Slow cooking method makes it impossible for food to dry out or burn
  • Bag diameter is 15.5" and fits short-handled pots from 2 to 12 quarts
  • Can also be conveniently used as a cooler bag to keep food and drinks chilled
  • Recommended for use with copper, steel, aluminum, enameled cast iron, cast iron, and glassware pots. If using cast iron, clay, or ceramic, place a trivet in the bag under the pot to avoid damaging the fabric from the heat
  • A portion of all proceeds go to the wonderbag Foundation
  • Please note: Ships vacuum sealed, may take up to 24 hours to fully inflate before use
  • Handmade in South Africa
  • Dimensions: 18.5" x 18.5" x 8.6"
  • Weight: 2.8 lbs.

7 Reviews (4.9 out of 5 Grommets)

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Works just like you said it would. I love it. Next time is corned beef.


Instant hit Love it!


I cooked the best stew of my life with this bag. I am looking forward to bringing nice hot meals to the lake to enjoy with my family. I cookI cook with propane, normally the stew I made would simmer for hours, by using the bag I reduced my cook time on the stove 75%.
It is also a fantastic conversation starter.
It travels well and is easy to handle, no more excessive bundling to bring hot casseroles and stews to functions.
I just love it.
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This is fantastic!


I have used my wonderbag more since in the past month than I ever used my slow cooker. I love it. It's great for soups and stews -- I've used it quite a few times to make broth from leftover bones. My favorite is for using it for long-cooking veggies like beets. I bring the pot to a boil, cocoon it in the wonderpot, and when I remember a few hours later, go back to find perfectly cooked veggies. I recommend this to anybody who would enjoy a low-tech, fuel efficient, snuggly cooking experience.More > < Less


The Gift They Loved


I purchased two of the cookers for Christmas gifts. Based on the very positive feedback I've gotten, winners! My son used his for the first time the day after Christmas. Put the prepared pot in the bag at 7 p.m. and was astounded when it was still hot to the touch 15 hours later. His family is excited to use it for day trips...get the meal ready and don't worry about finding a place to eat...and on camping trips. It's not safe to leave food cooking all day at a camp site. They can put this in the trunk of the car!

A huge bonus is that others benefit from the purchase.
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I just put myself of the "Notify When Available" list and I can't wait to get my hands on this. This is the PERFECT solution for one of our favorite pastimes here in the midwest-- college football tailgating. I bet you could sell a million of them in school colors. I love that the foam material is recycled and that the project provides so much to women less fortunate than I am.More > < Less

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How do you slow cook with cloth?

About wonderbag.

Cloth Cooker

This insulated bag is actually a portable slow cooker. It uses heat retention and a fraction of the energy to cook your food while camping, at picnics, or even just a dinner party.

Start the cooking process like you usually would, by bringing your soup, stew, or other meal to a boil. Then remove the pot from the heat and place it inside the wonderbag. The insulation will let it keep cooking without any additional electricity or fuel.

Maker Sarah Collins is based in South Africa, where some people—particularly women and children—spend a huge amount of time gathering wood for cooking and heat. The effort it takes keeps them out of school and work, and the fire has various health hazards for the people cooking. Sarah created wonderbag as more than just a cooking accessory, it’s “a catalyst out of poverty.”

When you buy a wonderbag, you’re also helping fund the wonderbag Foundation, which is committed to giving more families in need access to an easier, safer, more environmentally friendly way to cook.