Big Agnes Pluton UL 40° Minimalist Sleeping Bag
Big Agnes Pluton UL 40° Minimalist Sleeping Bag
Big Agnes Pluton UL 40° Minimalist Sleeping Bag
Big Agnes Pluton UL 40° Minimalist Sleeping Bag
Big Agnes Pluton UL 40° Minimalist Sleeping Bag
Big Agnes Pluton UL 40° Minimalist Sleeping Bag

Big Agnes Pluton UL 40° Minimalist Sleeping Bag

Regular price $599.95 Sale price$539.95 Save $60.00
Tax included. Shipping calculated at checkout.


Minimalist down fill ultralight mummy bag

Built for minimalist gram-counters with the highest gear standards, The Pluton UL 40° is a highly compressible sleeping bag filled with an incredibly lightweight and packable 850-fill DownTek™ insulation and finished with a PFC-free water-repellent coating. It'll keep you warm and your pack light, whether you're backpacking, bikepacking, or on any ultralight adventure.


  • Highly compressible, crazylight minimalist mummy bag for your fast and light adventures
  • PFC-free water repellent coating keeps you dry without the use of harmful chemicals
  • Minimalist hood with drawcord
  • Low-profile cordlock lets you uncinch the hood with one hand
  • Full-length zipper provides easy temperature regulation, and can be fully unzipped to enable the bag to be used as a quilt
  • Left zip, 70" / 178cm YKK #3 locking zipper
  • Ergonomic footbox construction provides more loft and warmth
  • Two-way zipper
  • Zipper garage
  • Streamlined exterior loops for hang drying or storage
  • Storage sack & stuff sack included 


Comfort Temperature Rating


Lower Limit Temperature Rating


Extreme Temperature Rating


Bag Weight


Fill Weight


Fill Material

850 fill DownTek™ repels water while maintaining insulating value - bluesign® Certified PFC free water repellent chemistry

Outer Material

Shell and lining are ultralight nylon ripstop with a PFC free DWR finish

Max User Height


Compressed Volume

10 x 13cm

Compression Bag Supplied


The standard local delivery time from our store in Melbourne for orders placed before noon is 2–7 business days via Australia Post standard delivery. Express Post is also available. Please see our Shipping page for more details. International Orders are subject to flight availability.

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Big Agnes


At our core, we want to inspire you to get outside and find the same appreciation for the backcountry we have.

Big Agnes started over 20 years ago with the goal to build better gear to get people out camping. It was a simple idea rooted in providing comfort to brave souls sleeping in the backcountry and keeping them on their sleeping pad. Who could have imagined two decades later we would be making award-winning gear, changing the sustainability game with solution-dyed tent fabrics, and helping you haul all that gear in backpacks?

Based in a ski town in northwestern Colorado, our backyard is an outdoor paradise, and our testing grounds are within sight of our office. The Continental Divide Trail is home to some of our favorite trails for skiing, hiking, and mountain biking; the Mount Zirkel Wilderness beckons us with its high alpine summits. The Yampa River flows a stone’s throw from our office; and on most lunch hours the office is quiet enough to hear a pin drop while we’re out finding fresh air or fresh tracks of one kind or another.

Being surrounded by outdoor recreation makes us appreciate our environment every time we get outside. We strive to incorporate practices from design ideation to end-of-life solutions committed to protecting the outdoors. Our social impact is greater than the gear we manufacture. We partner with over 20 organizations that help protect our public lands, support sustainable practices, and lead in equality and inclusivity.

Our urge to sleep under the stars and breathe fresh moun­tain air is what continually drives us and keeps us motivated. In the end, the bluebird summits and nights spent listening to raging creeks or even highway noise have made the journey awesome, and truth be told, we wouldn't want it any other way.

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