Camping, Sleeping Bags

Coleman Dunnock 20°F Big ‘n Tall Sleeping Bag Review: The “King-Sized” Bed of the Great Outdoors

A brown Coleman Dunnock Big and Tall sleeping bag showing its plaid cotton flannel lining and sturdy ZipPlow zipper.

Let’s face a cold, hard truth: most sleeping bags are built for people who enjoy feeling like a tightly wrapped burrito. But if you’re a sports enthusiast with broad shoulders, a mom who knows a toddler (or two) will inevitably try to squeeze in with you, or a cat owner whose feline friend thinks your sleeping bag is a 5-star hotel—you need space. Serious space.

The Coleman Dunnock 20°F Big ‘n Tall Sleeping Bag isn’t just a gear item; it’s a statement. It says, “I refuse to be cramped, and I refuse to be cold.” Rated for temperatures down to 20°F and lined with cotton flannel, this bag is a beast. In this Coleman Dunnock 20°F Big ‘n Tall Sleeping Bag review, we’ll see if it lives up to the Coleman legacy or if it’s just a giant piece of fluff.

Key Features: Why Size (and Flannel) Matters

  • Big ‘n Tall Dimensions: Fits adults up to 6ft 4in. You can actually stretch your toes without hitting the bottom!
  • Cotton Flannel Liner: None of that “cold nylon” shock when you slide in. It’s soft, breathable, and feels like home.
  • Fiberlock™ Construction: Prevents insulation from shifting. No “cold spots” even after you’ve tossed and turned all night.
  • ZipPlow™ System: A patented zipper that actually pushes fabric out of the way. No more midnight wrestling matches with your bag.
  • Thermolock™ Draft Tube: Keeps body heat in by blocking cold air from sneaking through the zipper.

Technical Specifications

Specification Details
Temp Rating 20°F (Cold Weather)
Max User Height 6′ 4″ (193 cm)
Dimensions 39 x 81 inches (Extra Wide)
Lining Material Cotton Flannel
Closure Type ZipPlow Snag-Free Zipper
Weight ~8.3 lbs (Heavy Duty)

The Heavyweight Battle: Coleman vs. ShinHye

How does the Dunnock hold up against its rivals? We compared it to the ShinHye XXL from our recent winter gear roundup.

Feature Coleman Dunnock ShinHye 0°F XXL Coleman Sun Ridge
Temp Rating 20°F 0°F 40°F
Liner Soft Flannel Brushed Flannel Polyester
Best For Tall Comfort Deep Winter Summer/Fall
Washable Yes (Machine) Yes (Machine) Yes (Machine)

While the ShinHye is warmer for sub-zero nights, the Coleman Dunnock offers a more balanced 3-season performance for family car camping.

What Campers Are Saying

“As a 6’3″ guy, I usually have to sleep in a fetal position. In the Dunnock, I can actually move. The flannel is so cozy, my cat hasn’t left the bag since we got back from the trip!” – Big Mike

“Perfect for chilly soccer tournament weekends. I can zip it all the way up and I don’t feel claustrophobic. It’s heavy, but it’s worth the weight for the sleep quality.” – Soccer Mom Sarah

Pro Tips for the Dunnock

  • The “Flannel” Care: Because it’s a cotton liner, make sure the bag is 100% dry before rolling it up for long-term storage to prevent that “old tent” smell.
  • Roll with Ease: Use the “Roll Control” hooks. They are small, but they keep the bag straight so you don’t end up with a lopsided mess that won’t fit in the car.
  • Pre-Heat: If it’s hitting that 20°F limit, toss a couple of hand warmers into the bottom of the bag 10 minutes before bed. You’ll thank us later.

Frequently Asked Questions

Is this bag too big for a standard washing machine?
It’s a big bag! We recommend using a large-capacity front-loading washer at a laundromat to avoid putting too much stress on your home machine’s agitator.

Is it waterproof?
The outer shell is water-resistant. It’ll survive tent condensation, but it’s not meant for sleeping out in the rain without a tarp.

Can I zip two together?
Yes! If you buy two, you can zip them together to create a massive king-sized double bag.

The Final Verdict: Is it Worth It?

If you’re looking for an ultralight bag to carry for 20 miles on your back, keep walking. But if you want the most comfortable, spacious, and reliable car-camping experience possible, the Coleman Dunnock 20°F Big ‘n Tall Sleeping Bag is unbeatable. It’s built for tall adults, chilly nights, and anyone who values a good night’s sleep over shaving a few pounds off their pack.

 

Welcome Deal: $80 Off
Coupon

Register to Get $80 Off Your First $800+ Order

More Less
Expires on: 12/13/2029