If you find yourself backpacking in the cold months of winter, you need a sleeping bag that's going to keep you cozy and warm. The Summit 0° Ultralight Sleeping Bag By Outdoor Vitals is a great bang for your buck down sleeping bag that is well suited for a temperature range of about 10° down to around 0°. To review this down sleeping bag, it was brought from the alpine to the high desert to see if it was up for the adventure that is cold weather backpacking in the southwest!

Quick Rundown of the Summit 0° Ultralight Sleeping Bag By Outdoor Vitals

• Available in regular and long lengths
• Weight: 2 pounds 9 ounces for the regular length
• Insulation: 800 fill power HyperDry™ Down, RDS certified
• Shell material: 10D Ripstop Nylon with DWR
• Regular 730g down fill
• Center zipper with pillow style draft collar baffles
• Footbox is shaped to match the natural splay of your feet when you're lying down.

My Experience with the Summit 0° Ultralight Sleeping Bag By Outdoor Vitals

During a big cold snap in the alpine, I took this Summit 0° Ultralight Sleeping Bag by Outdoor Vitals on a backpacking trip up to 13,000 feet. It seemed like temperatures would be right around 5° overnight, so it seemed like the perfect test of the Summit 0° Ultralight Sleeping Bag's winter worthiness.

I was initially impressed by the weight of the Summit 0° Ultralight Sleeping Bag and was also impressed by how small it compresses down. It didn't take up as much room in my backpack as I expected it to, which was awesome and allowed me to pack extra treats!

After trekking up a handful of miles, I unpacked camp, got my tent set up and pulled the Summit Sleeping Bag out of its stuff sack. It started lofting up right away and looked nice and fluffed by the time my sleeping pad was inflated.

In the evening when it was time to get cozy, I crawled into the Summit 0° Ultralight Down Sleeping Bag. It has a center zip, which is ideal in so many ways. It's nice for lounging in the tent, and I find that overall it's a warm and comfortable design choice. I zipped up and the draft collar immediately started locking in some much needed heat.

I slept well that night fully zipped up in the sleeping bag. I woke up to a glittery with ice tent, but condensation wasn't much of an issue. The DWR coated shell of the Summit 0° easily repelled what little moisture ended up getting on the footbox.

Over the duration of this trip I was impressed by the bag's warmth. It never got colder than zero outside, which takes the Summit 0° down to its rating. I felt pretty comfortable in that situation, although I don't think I would be comfortable using this sleeping bag in colder temperatures that that.

Later in the season I used the Outdoor Vitals Summit 0° Ultralight Sleeping Bag on a shorter backpacking trip in Utah. The temperatures were a bit less harsh, with nights varying between 2° to 14°. I was cozy each night and am glad this is the sleeping bag I brought. It's so lightweight and warm that backpacking with it over winter is a pleasure compared to much bulkier options which are more common!

If you're looking for a high quality winter sleeping bag that doesn't break the bank, is ultralight and compresses down super small, definitely check out the Summit 0° Ultralight Sleeping Bag by Outdoor Vitals.

Summit 0° Ultralight Sleeping Bag By Outdoor Vitals: Pros and Cons

The Summit 0° Ultralight Sleeping Bag by Outdoor Vitals is a super cozy sleeping bag for super chilly camps that boasts an ultralight weight. Check out the pros and cons below:

Click here to learn more and purchase the Summit 0° Ultralight Sleeping Bag By Outdoor Vitals for your next adventure!

My review is independent of the supplier and reflects my own opinions. Some of the links on this page are affiliate links, which means I may receive a small commission if purchases are made through those links at no additional cost to you.