Gear Review: Therm-a-Rest Adara HD Sleeping Bag

Therm-a-Rest Adara HD 22 Degree Down Sleeping Bag 

Images from Therm-a-Rest

Images from Therm-a-Rest


Therm-a-Rest Adara HD is a four season, lightweight, mummy sleeping bag. With a European Comfort Rating of 22°F and a lower limit of 10°F, this backpack is ideal for winter weather. The hydrophobic down and Synergylink mattress connectors keep you warm and dry, which is crucial in cold conditions.

MSRP: $579.99


  • Weight: 2 lbs 6 0z
  • Materials: 750 fill Nikwax Hydrophobic Down and Thermacapture Polyester Lining
  • 22 degree, Four season sleeping bag

Circumstances of Review: After placing fourth in the Badger Sponsorship, Hannah and I chose to support the companies that generously contributed to Appalachian Trials. The fourth place finish included a Therm-a-Rest Mira HD Sleeping Bag and Sunshine used this item. I, instead purchased the Therm-a-Rest Adara sleeping bag for the cooler months at the start of my thru-hike. Understandably, a 22 degree bag is warm for the Appalachian Trail. And, in June, I switched to a 35 degree bag.


Warmth: Thanks to the Therm-a-Rest Adara HD, I spent my nights comfortable and cuddled. During cool spring nights, this sleeping bag kept me cozy. Especially, since the sleeping bag makes your body feel like your cocooned into a perfect pillow. I’ve used this bag in under 10 degree temps and with the right layers I slept comfortably in the freezing weather.However, I was sometimes too hot (nights over 55/60 degrees) given the bag is rated for 22 degrees. On these occasions, I would either use the bag as a quilt or sleep half way in flamingo style.

Hydrophobic Down:  Personally, I love the feeling of down but hate that it loses warmth when wet unlike synthetic. Well, problem solved with Therm-a-Rest’s Nikwax Hydrophobic Down. Nikwax Hydrophobic Down waterproofing creates a barrier to repel water from hindering the loft and insulation properties of down. Because, let’s be real, when thru-hiking your gear, including your sleeping bag run the risk of getting wet. So, finding the Therm-a-Rest Adara HD that was down and could withstand moisture was key.

img_7602Cinchable Hood: This mummy bag goes above and beyond with the cinchable hood and the draft collar. Not only can you tighten the hood to hide your face, the draft collar keeps cold drafts out too. Basically, the cinchable hood and the draft collar were my trail equivalent to a pillow. Please take a second to admire how snuggly the sleeping bag looks in the picture. Yes, its as comfortable as it looks, for backpacking standards at least.

Secured to Sleeping Pad:  Have you ever slid off your sleeping pad in the middle of the night? I certainly have, and woken up on the freezing cold ground, which stinks. The Therm-a-Rest Adara’s Synergylink mattress connectors keeps the sleeping bag connected to the sleeping pad, making for a better night sleep. After switching to a 35 degree bag without the mattress connectors, I realized how important they were to 1. not wake up in the middle of the night on the hard ground,  2. help the sleeping bag and sleeping pad work their insulating magic and 3. ensure a quality night’s rest free of the cold forest floor



Weight: At 2 lbs 6 0z, the Therm-a-Rest Adara doesn’t qualify as lightweight. Although on the heavier side because  the bag’s insulation and temperature rating, it may not be necessary for an AT thru-hike but is awesome for four season backpacking. However, knowing the temperatures on the Appalachian Trail, there are lighter options such as the Katabatic Gear Palisade 30ºF that weighs a mere 1 lb 2.2 oz .

Price: The MSRP of $579.99 is pricey for sleeping bag. I actually found this bag on Ebay NWT for $220 and I’m honestly not sure if I would have purchased it at MSRP. Personally, I try not to buy anything unless its at least 35% off MSRP and always hunt thrift stores and the internet to search for gently used gear. But, I believe the quality, comfort and insulation the Therm-a-Rest Adara HD provides is a great value for four season backpacking.

Feathers Poking Out Feathers Flying Everywhere: After a month or so, feather’s started slowly coming out of the bag. It wasn’t anything major but kind of annoying to see them poking out. I’ve washed the sleeping bag twice according to manufacturers directions and there hasn’t been significant down loss.

Care: It’s important to remember to maintain down fabric. When the sleeping bag acquires that “hiker stank”, time for a wash. BUT, the sleeping bag must be washed either by hand or in a washing machine using Nikwax Down Wash Direct. Instructions in link.


Overall, for a four season sleeping bag, the Therm-a-Rest Adara HD is an outstanding pick. It’s warmth to weight ratio is great for cold weather treks. Looking back, I didn’t need a 22°F and could have opted for a 30°F instead. Yet, I’m still glad I purchased the Therm-a-Rest Adara HD because I never spent a night cold on the trail. Plus, as someone whose learning about backcountry skiing and mountaineering this bag is great for those trips. If you run cold or are starting in cold weather, I highly recommend the Therm-a-Rest Adara HD, knowing you’ll need a lighter and less warm bag for warmer months.

Shop the Therm-a-Rest Adara Here

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