This Wooly Mammoth Is Your Cozy-Core Winter Camping Hideout

Forget about the chalet — take your ski lodge with you. The Mammoth Overland WLY trailer promises to keep you warm in all but the coldest temperatures. It’s like a giant mitten inside, thanks to wool-lined walls.

Plus WLY, or Wooly, has loads of insulation and a heater meant for a cabin, all to make cold-season camping a lot more pleasant.

Why Should Camping Stop When Snow Falls?

Some of the best outdoor activities happen in the cold. Snowmobiling, skiing, snowshoeing, and more. But winter camping is definitely not on that list, because staying warm at -20 is, well, miserable. And hard.

The Mammoth Overland WLY wants to help fix that by keeping you warm and cozy. The floor has an R25 insulation rating, while the walls and ceiling are R12. That’s as much insulation as you’ll find in the walls of some houses and it’s worlds more than typical campers.

A big VarioHeat furnace from Truma helps, too. It’s an 11,500 BTU unit, designed for campers but pumping out enough heat for a 600-square-foot cabin — way more than is needed for this tiny camper trailer. It’ll also work at up to 8,694 feet, making sure you can stay warm up in the mountains.

This Feature Puts the Wooly in WLY

But, the feature that makes us feel warm and cozy is the WLY’s wooly walls. The walls are covered in a Buffalo plaid-style layer of wool. Wool is an amazing insulator, even when wet. It’s hypoallergenic and fire resistant, and, best of all, it won’t be an icicle against your backside when you bump into it when getting dressed. And it looks, as the kids say, cozy AF.

Winters in the Pacific Northwest are beautiful and majestic, especially in the mountains. I wanted to create a trailer that allows folks the ability to explore during winter for more than just the day. With Wooly, our engineers exceeded my wildest dreams. During testing, we were able to maintain 85 degrees inside the trailer, even with the kitchen and both doors wide open, with a 27-degree outside temperature. WLY is a dream come true for four-season campers.

— Mammoth Overland President Scott Taylor

Includes Solar & Generator Power Plus Heated Water Lines

Power for the trailer comes from shore power, the towing vehicle, two 100W solar panels, and a 4,000W generator. They feed an 800Ah lithium battery pack for maximum electric storage.

The trailer’s living space is heavily insulated, and so is the plumbing. The WLY’s water tank and lines are heated to ensure that they can stay liquid down to -20. But that doesn’t mean it won’t work in the summer. The WLY has a Dometic A/C, and the insulation helps keep the heat out in warm weather as well as the opposite in winter.

Sorry, the Galley Is Still Outside

There is one part, however, that isn’t cozy. The kitchen.

Like Mammoth’s HV and ELE trailers, the kitchen is outside. However, it has an annex that can help keep you sheltered. There’s also a 23Zero Bushman awning room so you can get out of your snow gear before getting inside.

Because the trailer is designed for snow, it wears Toyo Open Country A/T III tires with a 3PMS winter tire rating. It also has nine recovery points, five more than the standard HV, to make sure you can get it out of that snowbank.

The Mammoth Overland WLY overlanding trailer starts from $56,900 and is built to order for each customer. Mammoth is taking deposits now, and deliveries are scheduled to start in the first quarter of 2025.

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