September 10, 2021

Pros and Cons of a 35 ltr to 45 ltr Climbing Backpacks

by Brad

Your backpack is the most crucial component when you go climbing because it will hold all of your valuable gear and may accompany you on all climbs you do for years. 

Choosing the correct backpack, therefore, can appear to be a daunting task at first. Here are some tips on which climbing backpack to bring based on your needs.

Table of Contents
Types of Climbing Bags
There is a difference between climbing packs and climbing backpacks.

What Distinguishes a Pack as a Climbing Pack?

Climbing packs are often smaller, have a lower profile, and have the features needed to connect climbing-specific equipment, such as ice equipment, crampons, and climbing ropes. 

They are different from hiking daypacks, backpacking packs, or climbing backpacks in that they are designed to be used when hiking and ascending technical terrains, such as steep rock, ridge scrambling, or even indoor climbing. 

In general, climbing packs trade frame support and hiking comfort in exchange for improved climbing performance.

What is the Most Appropriate Size?

The first step in selecting the correct alpine pack is determining the capacity that best suits your climbing goals. 

Because no one pack is ideal for every climb, the greatest results are obtained by having two packs – one larger and one smaller – allowing you to select the proper capacity for the journey at hand. 

Purchasing a midsize backpack to achieve maximum adaptability is an alternative and less expensive choice.

35 Liter Backpacks

A 35L pack is ideal for car-to-car climbs and one-night adventures with a lightweight bivy setup. Climbing rough terrain with a 35L backpack is significantly more comfortable than with a larger load because 35L backpacks are compact and low profile. 

If you do most of your climbing on weekends, a 35L pack will suit you far better than a larger backpack in terms of performance, bulk, and weight. 

Because of the restricted carry space, climbing longer than a day with a 35L pack necessitates traveling light. Climbing challenging terrain will be a lot more pleasurable if you travel light.

Backpacking Packs 35 ltr and 45 litr pros and cons
What are 35 ltr and 45 ltr climbing packs?

45 Liter Backpacks

This is a capacity that can be used in a variety of situations. It isn’t too big or too small. If you take many trips that are modest in duration, such as three days, this type of pack will be ideal for you. 

You can far more easily carry the goods you need to stay comfortably in the mountains with the extra liters of capacity over a 35L pack – fuel, stove, shelter, and extra food.

However, because 45L is still a tiny volume, many 45L packs feature light and simple frames, making them easy to climb with. If you do a lot of ice climbing, a 45L pack might be the best option. 

All of the extra layers of clothing you’ll be carrying in the winter will fit more readily in a backpack of this size than a 35L pack. A 45L pack is the best pick if you only want to buy one climbing pack and go on multi-day expeditions only once in a while. 

For day-long rock climbs, a 35 pack is also recommended since it will feel easier on your back than your 45L pack. This size pack is designed for multi-day climbs. A smaller climbing packs better suits most people because most people’s climbing is done on the weekends or days off from work. 

Types of packs for backpacking
Climbing packs are made from different materials which have different durability.

Related Article: What is the Connection between Rappelling and Hiking

What Kind of Materials Are Used?

The materials used are another distinguishing feature of a high-quality daypack. Here’s a basic rundown of the fabrics:

  • 1. Nylon is widely used due to its resistance to wear and tear. Nylon twill, which has a solid diagonal weave, is another popular choice.
  • 2. Ripstop textiles (polyester or nylon) are woven in diamond or box patterns, resulting in a reinforced grid. 
  • 3. High-tenacity fibers are used in nylon fabrics to improve tear resistance and abrasion. Their disadvantage is that the tough fibers are hefty. 
  • 4. Nylon oxford is a lightweight, smooth fabric with a simple weave that has long been utilized in pack construction.
  • 5. Polyester/Nylon blends are commonly utilized to provide various hues inside a single fabric. It’s all a matter of taste.
  • 6. Hypalon is a synthetic rubber used to reinforce high wear sections of packs, such as the edges of important touchpoints. Because of its weight, it is only used sparingly on packs.

The denier of the fabric is just as important as the type of fabric. A fabric’s yarn is measured in deniers, which is a measure of fineness. Denier has an impact on a backpack’s wear resistance and, as a result, its weight. 

More robust denier fabrics have larger abrasion resistance, but they also have a higher weight. Fabrics as light as 70 denier may be used in ultralight explorer backpacks. Ballistic nylon, on the other hand, is frequently graded at 1,600 denier or greater.

Fabrics mostly have 1 of 2 coatings:

The standard coating used in internal walls is polyurethane. It has good water resistance (but not waterproofness – if you submerge your backpack in water, the contents will ultimately become wet). 

Different Rock Climbing Backpacks
Look for a durable climbing pack that can last for at least 3-5 years.

Silicone is used to reduce weight. It has a high tear strength, although silicone breaks down more quickly than a PU covering. PU coatings may improve water resistance.

What Should You Look for in Terms of Durability?

The zippers and straps are the two critical elements on any pack as they are most likely to wear and tear. Look for double-stitched, metal zippers of decent quality and buckles that aren’t fragile or flimsy. By trying a zipper several times back and forth, you may get a good idea of how prone it is to lock up.

Ventilation mechanisms or netting on good packs keep the load away from your lower back and keep your clothes from sweating through. While this adds to the comfort, take extra precautions because these are more prone to tearing than a plain back pad.

Tip: Take a Torso Measurement

Before you even begin shopping, measure the length of your torso to ensure that you purchase the correct backpack for your physique. 

Nothing is more crucial than the perfect measurement when it comes to fitting a larger backpack since, without it, your shoulders, hips, and back will not be able to take the burden properly, causing discomfort and possibly damage.

You’ll need a pal and a tape measure or a length of thread to achieve this. If you are into multiple climbing disciplines and you have many packs and backpacks, learn how to store backpacks and preserve their lifespan. Be sure to pack light if you are backpacking.

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About the author 


Brad is a professional climber in the discipline of traditional climbing. He often jokes that he can get a book to read during the long climbs. Of course, it always goes well with a good cup of coffee. Drinking coffee is his safer hobby.

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