20F Full Zip Sleeping Bag

4 Reviews
$369.00 Weight 19.0 oz / 539.0 g

Lead Time Ships in 2 weeks

When a full day of adventure has earned you a good night’s rest, you deserve a sleeping bag that fits like a dream. Our Full Zip Sleeping Bag is warm, comfortable, and versatile; keeping you cozy and tucked away after a long day of hiking, climbing, biking, canoeing or any other outdoor pursuit. The bottom end of the zipper can be opened, allowing you to kick your feet out if you get too hot under all of that premium goose down.

Includes a Free Zpacks Roll Top Dry Bag for Storage! A $30 value!

For a slightly lighter option compare our 3/4th zip 'Classic' sleeping bag, or our 'Solo Quilt'.

  • Constructed with DownTek water-resistant 950 fill power goose down which stays dry 90% longer than untreated down. It has C6 water repellent with no PFOA or PFOS. Our down is responsibly sourced and is 'Responsible Down Standard' Certified.
  • Each compartment is overstuffed with 30% more 950 Fill Power Premium Goose Down than is necessary for maximum loft to account for any future down compression.
  • Vertical baffles on the upper body keep down from migrating to the sides. Tightly spaced compartments help keep the down evenly distributed so there are no cold spots. There are no "sewn through" seams.  
  • Our rectangular foot box is roomy, and fits the shape of your feet comfortably when lying on your side, on your stomach, or on your back with your feet angled out in a relaxed position. 
  • Black fabric on the inside for quick drying. Both the liner and the shell are treated with C6 durable water repellent to resist rain spray and body moisture. 
  • Full length two way zipper extends to the last baffle of the bag. You can open the bottom end and vent your feet, or flip the bag around and wear it as a cape in camp on cold mornings.
  • A draft tube stops cold air from passing through the zipper. Position the zipper below you for maximum warmth, or turn it to the side or top for convenience on warmer nights.
  • A zipper guard is in place to prevent the zipper from snagging on the draft tube or sleeping bag material.

  • A flat clip at the top of the zipper keeps the zipper securely closed. Or use the clip alone with the zipper opened for venting.  
  • An Elastic cord can be cinched tight around your neck to keep out drafts, or pull the bag up around your ears. This bag does not have a hood- wear a warm hat, or a Goose Down Hood, or size up in length if you want to pull it up around your head.  
  • Roll Top Dry Bag is included, and adds ~.9 ounces (25.5 grams) to the listed weight. The dry bags are a comfortable fit and can be compressed smaller by squishing the contents and rolling the top down more.
  • All Zpacks gear has a two year limited warranty against defects in materials or workmanship. Please see our return / warranty policy.

A printable .pdf version is available here.

.59 oz/sqyd Ventum Ripstop Nylon

The inner and outer shells of our sleeping bags and quilts are made from super light, high quality, 7 denier Ventum ripstop nylon. It has a finished weight of just .59 oz/sqyd (20 g/m²). 

Ventum nylon features a high quality "C6" durable water repellent (DWR). The fabric can shed light mist and rain spray but is not waterproof.

Ventum nylon cuts the wind while still allowing for excellent vapor transfer and breathability. It has a soft texture and is not sticky or plastic feeling like some other fabrics in this weight range.

Made in Japan.

DownTek 950 Fill Power Water Repellent Goose Down

DownTek 950 Fill power goose down has a "C6" water repellent which allows it to stay dry over 90% longer than untreated down. The water repellent is PFOA and PFOS free. It is 'Responsible Down Standard' certified, ensuring that the animals are treated humanely. Goose down is a byproduct of the goose meat industry.

A printable .pdf version is available here.


Store loose (hanging in a closet for example) when not in use. Each bag has a hang loop at the foot. Alternatively it can be stored loose in a laundry bag.


Sleeping bags do not need to be washed very often. Wash once after a long season or only as needed.

Be careful of machine washing down sleeping bags. The twisting motion of a washing machine could potentially tear the shell or the internal baffles. If you do try a washing machine do so at your own risk using the delicate setting.

We recommend hand washing your sleeping bag in a bathtub with warm water and Granger's Down wash. Keep the sleeping bag in the dry bag and remove it while it is underwater so that it doesn't fill up with air. Swish the bag around for a few minutes. Drain the tub then give it another good rinse in fresh water.

Squish the sleeping bag back into the dry bag and squeeze as much water as you can out of it.

For best results, lay the sleeping bag out in the sun to dry. If the sleeping bag has a darker shell material (for example black on the inside) face the black side up to absorb more heat from the sun. You will have to periodically pull apart any wet down clumps. It may take all day to completely dry a sleeping bag, but don't worry, eventually all the clumps will be broken apart and dry and it will fluff back up better than new.

Some people use a clothes dryer with tennis balls to help break the down clumps apart, but do so at your own risk. High heat can melt delicate shell materials. Even with a dryer it can take a very long time to dry a sleeping bag. We recommend drying your down gear items in the sun, or line drying indoors if outside weather doesn't permit sun drying.

Customer Reviews

5 Based on 4 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • light
  • zippers
  • sleeping bag
  • Cons
  • pros
  • bottom
  • temps
  • zipper
  • times
  • quilt
New Zealand New Zealand

Amazing gear as always!

I swapped to the zpacks full zip bag from the Revelation quilt, due to the cold spots and down compression issues with the quilt. I do not regret it! The sleeping bag is packed with down, and after a few weeks on the trail stuffed at the bottom of my pack is going strong. The bag has great loft and is super comfy. It’s great to have the option of using it as a quilt on most evenings, but the ability to zip it all up to be snug for colder nights and cowboy camping, keeping the cold and critters/bugs out. Have only had to use it fully zipped once on the Te Araroa to date, despite some cold nights. It is really light and packs down nice and small with all my gear on top of it. Drys very quickly also if it gets wet.

Landon B.
United States United States

Performed Great on JMT

I purchased the 20 degree full zip, standard long bag (I'm 5'11"). I experienced temperatures down into the 30s while hiking the JMT this past August 2019, and the bag performed wonderfully. I was warm every night and even had to take off base layers on a couple warmer nights. The bag is very lightweight, and the full zip makes it versatile, as I can fully unzip it when in warmer seasons/climates. Additionally, my feet tend to get hot while my body stays cold, and the 2 zipper system on the bag allowed me to pop my feet out while keeping the rest of the bag zipped. I also highly recommend going a length longer than needed so you can pull your head into the bag when it gets chilly. I'm also glad to see the new bags have a 3-D foot-box, which the old models did not appear to have. I wear a size 12 shoe and never felt like my feet were short on space. After using the bag for 19 nights the bag shows no wear and tear, although I am curious to see how the lightweight fabrics hold up long term. My only significant complaint is that the draft tube seemed under filled, as there were several times when after rolling over I felt a draft along the exposed zipper. However, when keeping the zipper under my body I never felt any drafts. PROS - Lightweight - Very Warm - 3-D Foot-box - Great Zipper System CONS - Under-filled draft tube - Fabric seems delicate, but so far no wear

Jon M.
United States United States

Very warm bag

This bag was very versatile when hiking 370 miles on the PCT this summer. There were times it worked great as a quilt and when the temps dropped I zipped it up and was perfectly toasty. Great bag!

Emily K.
Australia Australia

Would rate!

Ridiculously light. Great versatility. Zippers are very smooth. Love being able to have a quilt and sleeping bag in one.