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Mountain Hardwear
Phantom GORE-TEX Sleeping Bag: 0F Down

4.739130434782608 out of 5 stars
23 Reviews
Current price: $580.99 - $687.99 Original price: $859.99
Up to 30% off
Color:Alpine Red



Phantom Gore-Tex Sleeping Bag: 0 Degree Down

Whether you're backpacking, climbing, or ski mountaineering, the Mountain Hardwear Phantom Gore-Tex Sleeping Bag is a critical staple for your overnight kit in the high alpine. This versatile expedition mummy is designed to be lightweight, warm, and comfortable when you find yourself out in cold weather conditions. It is constructed with Gore-Tex Infinium to block wind and repel rain while allowing vapor to escape for comfort in severe conditions. Its high quality down keeps you warm while being highly compressible so you can easily pack along all the other gear you'll need for your trip too.

Mountain Hardwear thoughtfully constructed the Phantom for a warm and comfortable sleep whether you're on a backcountry hut trip, multi-week backpacking trip, or a high-alpine traverse. For starters, vertical side wall baffles add warmth and provide maximum loft while an oversized down-filled face gasket extends into the hood to block drafts on those extra chilly nights. Additionally, the shaped draft collar prevents your warm body heat from escaping through the zipper and the expedition mummy cut allows you to store gear in freezing temperatures.


  • Versatile mummy bag for comfortable sleep on high alpine treks
  • Expedition mummy cut allows gear storage when in freezing temps
  • Gore-Tex Infinium blocks wind, repels moisture in severe conditions
  • Down offers a high warmth-to-weight ratio and compresses small
  • Vertical side wall baffles add warmth, maximum loft in cold temps
  • Oversized down-filled gasket extends into hood to block drafts
  • Contoured foot box allows natural position for enhanced warmth
  • Compression sack and mesh bag included for storage and packing
  • Item #MHW01CT
[membrane/laminate] GORE Windstopper (2-layer), [face fabric] 30D nylon ripstop, DWR treatment, [lining] 20D nylon
800-fill RDS goose down (90% down, 10% feather)
expedition mummy
left or right option, glow-in-the-dark reflective zipper pulls
Max User Height
[regular] 72in, [long] 78in
Shoulder Circumference
Hip Circumference
Foot Circumference
[long] 36in
Bag Length
[regular] 87in, [long] 93in
Draft Tube
Pad Retainer
Fill Weight
[regular] 1lb 15oz, [long] 2lb 1oz
Storage Sack
Stuff Sack
nylon compression sack
Stuff Size
9.5 x 17in
Claimed Weight
[regular] 3lb 6oz, [long] 3lb 9oz
Manufacturer Warranty

Overall Rating

4.5 based on 23 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 2 reviews
4 Stars - 2 reviews
5 Stars - 19 reviews

What do you think about this product?


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3 out of 5 stars

June 26, 2024

Design features render bag cold

My first Mountain Hardwear sleeping bag is a 20 degree bag I bought over 15 years ago, and it's now the one I use when I sleep in my car. My second MH bag is the phantom -40 gore-tex bag I bought 3 years ago to guide on Denali. I love it because every morning my sleeping bag is dry and my tent-mates is wet. My third MH sleeping bag is the phantom 20 degree (not gore-tex), which is incredibly lightweight, and warm enough for most of the warm weather months climbing the mountains of Washington. So, I was so excited to replace my 15 year old other-brand zero degree bag because it wasn't as warm as it used to be with a bag from the awesome Phantom line. I just used it for seven nights on Rainier with nighttime temps from 35 degrees down to about 20 degrees. On the warmer nights I loved it. It is spacious enough to do some stretching inside! I am 5'4" tall, and the regular length is long enough that I can put my boot liners in the foot of the bag overnight to dry and they aren't annoying. However, on the colder nights I woke up cold many times. The bag is so large in the torso that I think my body didn't produce enough heat to warm it up. Also, while there is baffling around the top of the torso to help hold in heat, it does not have a draw string to cinch it down like my old 0-degree bag did. Even when I cinch the face hole down as tight as it will go, I lose a lot of heat because I can't close off the torso compartment around my neck/shoulders. On the colder nights (20 degrees F), I was wearing a sun hoody, light fleece, down vest, and very light synthetic puffy coat to sleep in. I would wake up cold and have to drag my big parka into the bag with me to take up the extra space. Luckily I brought a pillow on this trip, because I normally use my parka for a pillow, because I rely on the rating of my sleeping bag to keep me warm with all my other layers on. I am very sad that I spent so much money to have a warmer sleeping bag, and due to the design I am not any warmer than I was with a really old bag that I've used hundreds of times. If you have a very large torso you may not have my problem with this bag. If you are an averaged or small sized person that sleeps on the cold side, you will probably want to look for a different bag.


Originally reviewed on

5 out of 5 stars

December 16, 2023

Quality sleeping bag

This sleeping bag is perfect. Compacts down nicely and keeps you warm. Perfect for backcountry skiing


Originally reviewed on

5 out of 5 stars

November 17, 2023

Top tier

Well worth the money wish I would have have it years ago don’t wait buy it now


Originally reviewed on

5 out of 5 stars

October 31, 2023

Great bag, I’m 6’2 250lbs and this bag fits me well. I don’t feel restricted at all. Really nice and warm and it traps the heat in well.

Amazing Bag! It fits really well and is comfortable


Originally reviewed on

5 out of 5 stars

October 18, 2023

Excellent bag

Took this up Mt. Adams in the snow, temp got down to the low 20s sleeping on the glacier with a Nemo tensor pad underneath. Very comfortable and warm without any extra layers. I was worried that the Goretex wouldn’t breathe well enough but that wasn’t the case; breaths very well. I was glad I had the Goretex because it was a windy night and my ultralight tent lets some wind blow through but I was perfectly comfortable in the bag. The Alpine mummy cut was amazing. I got the long version, am 6’3” and 185lbs. Was roomy enough to keep my cloths warm at my feet and I could roll to my side without feeling restricted. If I had any complaint about the bag it would be the drawstring on the hood. Material wise the cord seems a little lacking in quality compared to the rest of the bag and its location is hard to release when you have been closed in all night. Hope to test this in even colder temps was winter comes on.


Originally reviewed on

5 out of 5 stars

June 9, 2023

Couldn’t be happier

Super happy that I went with this bag for my upcoming coming trip to Kilimanjaro. Bag fits great and packs up nicely in the supplied compression sack.

Josh S

Originally reviewed on

5 out of 5 stars

April 26, 2023

Dry, light, perfect for tall people.

I bought this sleeping bag for backpack hunting out west. One of my hunting buddies had this bag on our last trip and he was comfortable the entire week sleeping in single digit temps. It is light weight, water resistant and comes is long enough for me (6’4”).

Ryan T

Originally reviewed on

5 out of 5 stars

November 21, 2022

Wife loves the cozyness.

I have the -40 version of this and it is so warm I had to get this version for those times that are not so cold,,, i love it, the quality of the materials and the stitching are top notch, the fill is amazing , the wife finds them amazingly cozy and she is not worried about being cold while out in the cold. Get one and get out there in the cold!


Originally reviewed on

5 out of 5 stars

September 23, 2022

Awesome sleeping bag

I only tried it twice and the minimum temperature was around 35F. It did great. I was even too warm for a bit, as expected. The quality look excellent. The size was also good, specially it’s width (enough to wear a big jacket if the weather gets too cold, and to move around if you tend to move a lot when you sleep. The only thing I would change would be making it just a little bit shorter. I’m 5 foot 8 and there’s some extra space on the regular size.


Originally reviewed on

5 out of 5 stars

August 12, 2022

Expedition Quality + Warmth

I used this bag on an expedition to the Andes and was thoroughly impressed with the Gore-Tex outer. The bag remained dry throughout a month in Peru and has the right amount of room inside to make it not too snug but not overly baggy.

Alpine B

Originally reviewed on