TETON Sports

Mammoth Double 20˚F

Mammoth Double 20˚F - Main image
$110.49 $169.99 In stock

Category: Amazon Exclusives - Sleeping Bags & Liners

The Mammoth 20°F Sleeping Bag combines roomy comfort with dependable warmth for your next outdoor adventure. Measuring 94 x 62 inches, it’s generously sized for two campers or anyone who enjoys extra space to stretch out. This bag features a durable double-layer construction, high-performance insulation, and draft tubes to trap heat and ensure cozy nights down to 20°F/-7°C. The Mammoth sleeping bag also features an integrated hood and full-length zippers with draft tubes so you can sleep your way. From weekends under the stars to summer camping, the Mammoth 20°F is perfect for your next adventure.

*The ratings we use are Survival Temperature Ratings, this is the coldest temperature the sleeping bag is designed to keep you alive in, but it doesn’t guarantee comfort. At the lowest point, you might be shivering or experience discomfort. For comfort ratings, we suggest adding 20-30 degrees from the listed rating.

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Zoe ★★★★★

After a rainy 40-degree night, we both stayed completely warm the whole time—the 20-degree rating definitely holds up. The 62-inch width is a game-changer for sharing without fighting for space, and the extra room actually helps trap heat better than my old mummy bag.

Lily L. ★★★★★

We took this out on a chilly mountain night and the 20°F rating held up better than expected—my partner and I both slept warm without roasting at 4 a.m. The extra length and width make it feel less like a coffin and more like an actual bed, which is a huge plus for side sleepers like me.

Ryan A. ★★★★★

The 94x62 inch footprint is a game changer—I’m 6’2” and can sprawl out without my feet hitting the zipper. Took it down to a chilly 25°F night and slept perfectly warm, no shivering at all.