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Big Agnes Pitchpine SL 45 Degree Down Sleeping Bag

The Big Agnes Pitchpine sleeping bag is a 45 (F) degree lightweight mummy style bag with 800 fill goose down insulation.

The review takes a look at how comfortable the Pitchpine is, how useful the features are and an overall guide of who its going to be most suitable for.

    What's Smart?

  • Sleeping Pad Sleeve
  • Comfortable
  • Super Light
  • Packs well

    What's Not?

  • Inaccurate temp rating
  • Quite pricey
Suitable for: Backpacking, Lightweight 3 season use
Approx price: $329.95 - $349.95
Countries available: US - Canada

Features and Design

This sleeping bag has similar features to others Agnes bags including sleeve built into the bottom of the bag for a pad. The actual bag has no padding or insulation on the base. This makes it more lightweight and manageable, but you will need to purchase a separate sleeping pad.

The padding sleeve will accept any sleeping pad with a 20 inch width, but the pad sleeve is best filled with the AirCore 2.5 inflatable sleeping pad, recommended by Big Agnes.

The pad is attached to the sleeping bag from the head to the hips. The sleeping pad remains loose otherwise so you can roll around more comfortably during the night without your pad escaping. The pad anchors the bag somewhat, preventing it from twisting around you in the night.

Other features include a pillow pocket that will hold most camping pillows, interior liner loops for adding more bedding on colder nights, and a left handed zipper system. The YKK #5 zipper allows mating with right sided zipper bags. A lifetime warranty is included.

The materials used for the fill ( goose down) and liner (low thread count) provides great insulation while keeping a user comfortable. These materials also keep the weight light enough for backpacking and compress well in a stuff sack to minimize room taking up inside a pack.


The Big Agnes Pitchpine sleeping bag features 800 fill goose down on the tops and sides, but has nothing on the bottom. Rather than providing filling on the bottom to get compacted under your body and create extra weight for the bag, the design leaves the base of the bag as a simple lining, depending on you to provide the support with a separate sleeping pad.

The 48 inch zipper opens to the halfway point and can be mated with other, right-handed zippers to create a shared sleeping space. The design makes for an easier access, and comes equipped with draft proofing to keep you warm at night.

A draft collar keeps body heat in, but there is no hood with this system. Many users suggest bringing a warm hat.

The shell is made of Pertex Quantum, a soft nylon material that is sewn in a quilted design. It is both breathable and insulating at the same time, distributing your body heat throughout the bag. The exterior is water repellent and the interior is stain resistant.

Warmth/Temperature Rating

While different sites claim that this sleeping system will keep you warm for different weather situations, the majority seem to agree that the bag should not be used much below 45°.

Recommended uses are for late spring, early fall, and any point during the summer months in temperate locations. For regions where the climate provides dramatic temperature changes during the night, this system is not suggested.

Despite the bag not performing well at temperatures around the advertised ratings this does not take away the fact that it provides ample warmth in all other temperatures.


The Big Agnes Pitchpine sleeping bag comes with a nylon stuff sack and a mesh storage sack included. When using the nylon stuff sack, the bag is easily compressed to a size of 6 x 15 inches.

When the mesh storage sack is used with a separate compression method, the unit can be reduced to a mere 5 x 6 inches of space. Perfect size for backpacking!


While the bag itself is reasonably priced (for the quality), seen at different locations online from anywhere between $250 - $330, the fact that a sleeping pad is required is not widely discussed.

Purchasing the recommended inflatable sleeping pad will set you back an additional $60-80.

Summary - Overall

In general, this sleeping bag ranks a decent 86%. While it is light and compresses to be carried easily in a pack, the lack of padding on the underside often takes a user by surprise.

The design and materials used for the Pitchpine are top quality which would be expected when a buyer has to part with over $300 but it does perform how it should. However, a user should consider a lower temperature rated bag if they are going to be using it anywhere near the advertised 45 F degrees which is advisable for most of the Agnes bags.

Specs: (R = regular L = long)
Minimum Temperature: 45 F
Insulation: 800 Goose down.
Weight: R = 1lb 2oz, L = 1lb 4oz.
Shell: Nylon rip-stop.
Max Length: R 5'10" , L 6'6"
Stuff Sack: Yes
Compression Sack: Yes
No Draft: Collar, Zipper, Wedge (between the bag and pad)
Warranty: Lifetime
  • The Pitchpine is available in a standard green shade and mummy shape. It is available in two sizes, regular and tall, to fit most people's size needs.

  • A lightweight design that weighs only 1.2 pounds for the regular size and 1.4lbs for the tall size.

  • The regular size is 5'10” in length with a girth of 67.5 inches at the shoulders. The tall sized bag is 6'6” in length and 72.5 inches at the shoulders. The size tapers down as shown in the specs.

  • Like all Big Agnes bags a sleeve is attached to slip a sleeping pad inside and has no insulation underneath the bag that the pad provides. This model needs a 20 inch pad in width for the correct fit.

  • The lining is made from a soft ultralight nylon taffeta with a high thread count that should provide enough comfort while keeping weight at a minimum.

  • Like many Big Agnes bags this has added features which includes: A zipper that can be mated to another Agnes bag, pillow pocket built in, stuff and storage sack included, and loops for attaching a liner.


User Reviews And Ratings

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