Big Agnes Pitchpine SL 45 Sleeping Bag: The Perfect Sleeping Bag for Any Hiking Trip

Sleeping bags are quite useful, particularly if you love camping and hiking. There is something very real and exciting about spending days outdoors, with nature to keep you company. Of course, if you want to spend time outdoors, you need a comfortable bag to sleep in.

After all, you do not want your whole experience ruined only because the bag you had was not comfortable and you did not get a good night’s sleep. Well, we are here to help you.

Here we will tell you about an amazing sleeping bag that any hiker or camper must have. In this review, we will talk about Big Agnes Pitchpine SL 45 Sleeping Bag, which is one of the best sleeping bags you could find.

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Product Specifications

  • Down 90% / Feather 10%
  • 45°F
  • Mummy shape decreases weight and packed size
  • Recycled mesh storage sack & nylon stuff sack included
  • Fits up to 6’6″ / 198cm // fill weight 12oz / 340g // bag weight 1lb 4oz / 567g // stuff sack size 6″x15″ / 15x38cm // compressed size 5.5″x6″ / 14x15cm
  • 48″ YKK #5 zipper. Mate together our left and right zip bag with the same size zipper

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When it comes to sleeping bags, comfort is not the only think to look for. You also need to make sure that the bag is portable and you can carry it around without exhausting yourself.

This is why sometimes the search for the perfect bag can get tiring. You want something that looks good, feels good, is easy to carry, and also fits in your budget.

We will talk about Big Agnes Pitchpine SL 45 Sleeping Bag in detail, and also discuss a few competing products.


If you want to go hiking or camping in medium cold weather conditions, this sleeping bag is definitely a good option. It is warm and adequately insulated so you will feel nice and cozy in it.

The bag is designed for a single person and is very comfortable. The bag is also designed in such a way that it packs easily, so you can carry it around with you with absolutely no trouble.

The material is 90 percent down and 10 percent feather, and hence provides a nice degree of insulation. Let’s talk about the bag in more detail now, and discuss all of its different aspects.


The sleeping bag comes in its own nylon stuff sack. The sack is easy to open and close and you can take the bag out of the sack with no trouble. The product also comes with a mesh storage sack, so you can keep the bag in it when you are not planning to go on a hike.

The nylon sack is lightweight and can be carried with convenience. This is a great feature which adds to the portability of the sleeping bag. You don’t need to buy an additional sack for carrying your sleeping bag on your backpacking trip; the provided sack will do.

However, the stuff sack is not entirely water-proof so that might prove to be a bit of a problem in case of heavy rain.

Design and Durability

This sleeping bag is designed in a mummy shape. Mummy shaped sleeping bags are tighter at the level of shoulders, and hips. Their width is lesser than rectangular sleeping bags and therefore they offer a more snug fit.

These bags can also retain heat better than rectangular ones. This is why this bag is such a great option for cold weather. It will keep you warm and dry through the night and you will get a good night’s sleep while out in the wild.

Material of filling is 90 percent down and 10 percent feather. Down filling acts by creating air pockets which retain heat. However, these fillings do not work very well when they are wet.

They tend to lose their trapped heat quickly in such a case. Therefore, the bag is designed for cold, dry weather conditions.

There is a built-in pillow pocket in which you can stuff your clothes to act as a pillow. Side zipper is present which can be joined with another bag to form a two-person bag. Interior fabric loops are meant for sleeping bag liners, so you can place a liner or sleeping pad in it and sleep more comfortably.

The presence of loops ensures that the liner will not slip from its position and hence you will not be uncomfortable when you shift around.

Thus, this bag is designed to keep you warm and very comfortable. Make sure you do buy a sleeping pad; the bottom of the bag is not comfortable without it.

A draft collar is also present. This is a flap of insulation present at the level of the neck. It traps heat inside the bag, and hence keeps you warm. A hood prevents cold air from outside from getting in the bag, and hence will keep your head warm.


Fill weight – 12 oz. / 340 g. Bag weight – 1 lb, 4 oz. / 567 g.

This bag is rather lightweight, considering the degree of warmth it provides. It can be packed and carried in a backpack. If you are going car camping, carrying the bag is even easier.

However, you should be aware that there are lighter sleeping bags available in the market. This is definitely not the most lightweight option, although it is rather good. If you want to purchase a bag which is even lighter, you will need to spend more money as ultra-lightweight sleeping bags tend to be pricier.


Stuff sack size 6 x 15″ / 15 x 38 cm. Compressed size is 5.5 x 6″ / 14 x 15 cm. 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.

This means that this bag is big enough that people with tall height can sleep in it with ease. Presence of two sizes ensures that you can find a fit no matter what your height is. The bag is a little snug around the shoulders, but that is because of its mummy shape.

This is specially designed to keep you warm. However, you will still feel comfortable and relaxed when you lie down in this sleeping bag.

Temperature Rating

Temperature rating is 45 degree F. This is the temperature at which you will be warm and comfortable in the sleeping bag. This means that the bag is not meant for very cold weather conditions. If you want to go hiking in freezing weather, you need to get yourself another bag.


The sleeping bag has 90% down filing. This type of insulation is more compressible, so it is a better option for backpackers. Bags with this insulation are lighter in weight and act by creating air pockets which retain heat.

However, as mentioned, they are not ideal for wet conditions as they do not dry out quickly. You will have to let the bag dry in the sun for a few hours if it gets very wet.

The bag is not entirely water-proof, although it does have water repellant insulation, which means that you can set the sleeping bag up on damp ground and still remain dry and warm.

However, do not expect the bag to keep you completely dry if it is lying in a water puddle. It will also keep you dry in case of a drizzle, though not in case of heavy rain.

Ease of Packing

The best thing about this sleeping bag is that it can be packed with ease and without any trouble. When you purchase it, it comes folded in a nylon bag. You can take it out and open it in a few seconds, and have to fold it in the same way to pack it.

The whole opening and folding the bag does not take much time, which is great if you are planning on going backpacking for several days, and might need to fold and unfold your bag quite often.

The sleeping bag can be set up on any flat surface, and as you will be using a sleeping pad anyway, you do not have to worry about the bag lying on an uncomfortable surface.

Value for Money

This sleeping bag offers great value for money. Pitchpine produces a lot of sleeping bags, and all of them are priced very competitively. The brand prides itself in providing great value for money. The product is very high quality and can maintain the temperature very well; therefore its price is justified.

If you buy other sleeping bags of this material and temperature rating, you will rarely find a cheaper option than this one. It is also a good buy because it has good weight-to-warmth ratio and is perfect for backpackers.

Who is this Product Best Suited for?

This sleeping bag is ideal for people who want to go camping or backpacking in cool, dry conditions. The bag is lightweight which makes it easy to carry. The mummy shape means that it is more compressible and occupies less space.

Down filling is also lightweight. All these features make this sleeping bag perfect for backpacking, hiking and trekking. A stuff sack is included which makes it simple and convenient to carry this bag.

The goose filling is not entirely waterproof so it is best not to carry this bag in areas where there is heavy rainfall.

Close Competitors You Might Like

Here are a few other sleeping bags which you may consider buying. After all, there are tons of sleeping bags in the market and it makes sense that you should look at a few of them before you make your purchase. The following bags are all high quality and are very comfortable.

Big Agnes Zirkel SL 20-Degree Sleeping Bag

The Big Agnes Zirkel SL 20-Degree Sleeping Bag is also mummy shaped, which means that it is easy to pack and carry. It has water-resistant down insulation, so you will remain warm and dry inside this bag.

There are draft collar and wedge insulation, which protects you from cold wind and prevents heat from escaping from inside the bag.

A zipper tube is also present so air does not get inside from the region of the zipper. It has a temperature rating of 20 degree Fahrenheit and therefore can be used in cool weather conditions.

Regular Bag Weight is 2 lbs. 4 oz.  / 1021 g while Fill Weight is 15.5 oz.  / 442 g. A nylon bag is included in which you can easily pack and carry the sleeping bag. The bag has pillow pocket as well as fabric loops to hold the liner in place.

TETON Ultralight Sleeping Bag

The TETON Ultralight Sleeping Bag weighs only 4.1 pounds, and thus is a great lightweight option. It has a temperature rating of +5 degree Fahrenheit, which makes it ideal for very cold weather.

The insulation in this bag is great. It has a hood which closes very nicely around your face and hence keeps your head and neck warm. The foot box has an extra layer so your feet will remain warm through the night.

It is mummy shaped, but provides a lot of space and is quite roomy and comfortable. A draft tube ensures that cold wind cannot get inside the bag from the region of the zipper.

The sleeping bag can pack to a nice small size so you can carry it easily. All in all, this is a great sleeping bag for cold weather as it will keep you warm and dry even in freezing temperature.

Hyke & Byke Snowmass Sleeping Bag

The Hyke and Byke Snowmass Sleeping Bag is another mummy shaped bag with a temperature rating of 10 to 40 degree Fahrenheit. It has down insulation and is made of waterproof fabric. The bag is guaranteed to keep you comfortable and dry in the temperature range which is mentioned.

The bag weighs less than 4 lbs. which makes it very lightweight. Regular size can fit an adult of 6 feet 1 inches height while tall size fits 6’6”. The bag has a small packing size, and when folded and compressed its dimensions are 11 inches long and 8 inches in diameter.

The sleeping bag is very durable and built to withstand the elements. It has a hood with drawstrings, horizontal baffles and a foot box; all of these features ensure that you remain warm and cozy.


The sleeping bag we mentioned in our review is truly a bag that you should consider buying. You will have a lightweight, easy to carry bag which will keep you nice, warm and comfortable while you sleep in the great outdoors.

You can carry it with ease and pack it to a small size. The specific features of the bag will keep the cold air outside while preventing your body heat from escaping. What more could any backpacker ask for?

If you want to buy another sleeping bag, do not forget to consider the ones we mentioned. And last but not the least, there is no harm in actually getting inside a sleeping bag before you buy it, so you know that you will fit inside it and feel relaxed while you sleep.

Make sure that you use the sleeping bag according to the temperature rating which is provided. You do not want to take it with you in freezing temperature if the bag is not meant for that, as you will be cold and miserable through the night.

Also, best avoid going for this sleeping bag if you are expecting heavy rainfall or snow. There is nothing more cumbersome than having a wet sleeping bag with you while you go backpacking.

To put everything in a nutshell, we will list the pros and cons of this sleeping bag so you know exactly what to expect when you buy it.


  • Lightweight
  • Easy to carry
  • Occupies less space as it packs to a small size
  • Stuff sack included
  • Good value for money
  • Sleeping pad sleeve keeps the pad in place
  • Ideal for fall and spring
  • Hood and draft collar will keep you warm through the night


  • Sleeping pad has to be bought separately as the bottom of the bag is simple nylon and not comfortable at all.
  • Once wet, it tends to lose its heat and is thus best avoided in wet conditions if you are not carrying a tent.
  • Cannot be used in very cold weather
  • Not the most lightweight option available
  • Smaller sleeping bags are available
  • Mummy shape might make a few people feel claustrophobic.
Big Agnes Pitchpine SL 45 Sleeping Bag
  • Packaging
  • Design and Durability
  • Weight
  • Dimensions
  • Temperature Rating
  • Insulation
  • Ease of Packing
  • Value for Money


All in all, this is a great sleeping bag for use in temperature range of 40 degree Fahrenheit and higher. You are sure to feel relaxed in this sleeping bag, and that is extremely important if you want to feel refreshed enough to hike. So go on and have a great time hiking and backpacking, and then when it’s time to settle down, bundle up for the night in the sleeping bag and wake up feeling energized.

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Have you used this sleeping bag and would like to add something we missed? Or do you have a better product to tell us about? Let us know in the comments!

4 thoughts on “Big Agnes Pitchpine SL 45 Sleeping Bag: The Perfect Sleeping Bag for Any Hiking Trip”

  1. I love Teton, so number one for me is TETON Sports Tracker +5F Ultralight Sleeping Bag. I am happy you have included it on your article (which is awesome, as always, if I may add). It is a comfortable and very warm bag. The inside of the bag is soft and perfect. I only have good things to say on this one.

  2. Hyke and Byke Snowmass Sleeping Bag is awesome. My sister is in love with it. It does not only have a great design, but the price is pretty reasonable too. In fact, it is cheaper than most brands. Despite of this, the quality is still superb. It is truly a must have in my opinion.


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