TETON Sports

Mammoth Double 20˚F

Mammoth Double 20˚F - Main image
$134.99 $179.99 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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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)

Penelope ★★★★★

Woke up at 5 a.m. shivering in my old bag, but this one kept me toasty all night even with the temps dipping. The 94-inch length means I can stretch out completely without my feet hitting the zipper, which is a first for me.

Amelia ★★★★★

First time my partner and I actually fit comfortably side by side in a sleeping bag—that 62-inch width makes all the difference. The 20-degree rating held up fine on a chilly mountain night, and I didn’t wake up with cold feet once.

Riley ★★★★★

I’ve never slept warmer on a camping trip, and the extra space meant my partner and I could toss and turn without yanking the whole bag with us. The 20-degree rating held true even on a chilly alpine night, and the oversized footbox gave my feet room to breathe.