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An Expandable, lightweight pack that’ll hold up to your globetrotting or backpacking habit.

For trips that demand an adaptable pack, the slim and lightweight Deuter ACT Lite 50+10 Backpack expands and is equipped with versatile pockets and attachment options that let you and your load evolve with the journey. For longer trekking trips, the lid can adjust as you cram a locally handmade quilt into the top of the pack, where 600cu in of extra space is readily available.

  • Deuter Aircontact system incorporates several breathable, hollow-foam cushions that draw cool air to your sweaty back through the foam as well as through the air channels between them
  • Variflex multi-layer hip-belt pivots to allow extreme mobility and comfort for mountain climbing
  • Vari-Quick adjusts the back and shoulder padding to fit any torso between 15-21in
  • Lightweight aluminum X-frame stay suspension is removable to make a lighter and more flexible pack for short trips
  • Bottom access compartment has internal zipper so you can have two main pockets, or one large pocket
  • Shoulder straps are made of soft, breathable 3D AirMesh and include support straps that make even the heaviest loads manageable
  • Double-layered base won’t rip or puncture as you travel the globe
  • Front stretch pocket easily holds a climbing helmet
  • Multiple outside straps hold climbing gear, ice axes, or a sleeping pad

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Deuter ACT Lite 50+10 Backpack - 3650cu in

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Here's what others have to say...

4 5


  • Familiarity: I've put it through the wringer

I'm giving this bag a five, but if it was more of sliding scale, I'd give it a 4.5. I'm feeling generous though. That being said, I've yet to have a problem with it. The weight is pretty well distributed as long as you know how to pack well. My girlfriend, who has a much nicer Gregory, packed it once for me while I was held up at work before a trip. I had to completely redo it. After which it was fine. Just use common sense really. Get a rain cover. It's not really even water resistant after a few trips. I'm a skinny guy nowadays thanks to an injury that dropped me down 35 pounds, but the chest buckles are still too wide even when tightened all the way. (Current weight during last trip with irritation: 145 and 5'11'') that can cause some irritation, but only near the sun-down usually.

Other than that, my biggest concern is mental. It doesn't look like it will stand the test of time and the price I paid doesn't reflect that it will. That worries me and faith in your gear makes the trip better. But honestly, I have no real evidence that it will ever fail me. Great pack for beginners and long weekend campers. I'm looking to start much longer treks this fall and I know for sure I'll need to upgrade.

One thing I'd like to say is that Deuter's customer support is top notch as well! Life time guaranteed pack!

4 5

Great lightweight mid size pack.

  • Familiarity: I've used it once or twice and have initial impressions

I've only used the pack so far on one very demanding 3 day hiking trip in the Bruce Peninsula (Ontario, Canada). There are a few fantastic features about this pack. Firstly it's quite light and therefore relatively minimalist (not too many bells and whistles). Bag also looks great!

The pack has a fantastic Deuter air contact system, although it definitely won't stop back sweat if you are doing some serious activity.
The bag also is extremely adjustable. I am 5,7 140lbs but have disproportionately long legs (32 inseam) therefore I needed a bag that could fit a shorter upper body. This bag has the ability to fit ALL types of torso lengths.

I didn't over stuff the bag nor carry near it's maximum capacity but had my sbag, pad, clothing, essentials and some food in it for 3 days. Had some slight discomfort over my collarbone (but this was the first hike of the year and was very demanding).

Few things I'd like to see improved: I'd take a slight weight increase for the famous Deuter built in rain cover. I'd also like the left hip belt to have some strong contact points to strap a point and shoot camera onto. The straps are also all extremely long, I'll need to cut and burn some of them.

If I go on a trip and REALLY pack this thing to maximum capacity i'll come back with an update.

Great lightweight mid size pack.
3 5

Good pack for the money

  • Familiarity: I've used it several times

It's not an awesome pack, but for the money it's totally worth it. The padding is good where you need it and it's relatively light. Great pockets and features.

5 5

Sweet Pack

Really nice pack. Lots of comfort and room. hoping to make it work as a winter pack too with the +10. I would consider it a nice upgrade from an osprey atmos. Havent really had it on an extended trip yet, just long weekends, but so far so good!!

5 5


  • Gender: Male
  • Familiarity: I've used it several times

The pack was everything i expected it to be.
lots of space
easy to adjust
light weight
I would recommend it to a friend!

4 5

Most people will love it

This is just my opinion based off my experiences, of course. I think that most people will be very happy with this Deuter. It has the accessibility that so many people seem to treasure, in the form of the sleeping bag compartment zipper access. The "+10" extension isn't a particularly unique feature, but its sturdy material is welcome and allows you to stuff lots of extra crap into the pack. The sternum strap is wonderfully adjustable. In this 50-55L category, there aren't many with an adjustment for torso length; most brands have a fixed position, so the Deuter gets big props for that feature. And the waistbelt is wonderfully beefy, much more so than the similarly sized offerings from Arcteryx, Gregory and Osprey. I've tried all of these packs, and only the Deuter seems to comfortably handle the load once the weight creeps into the high 30s or even up to 45 pounds (and the ACT Lite soaks up any load lighter than that). It's a very competent suspension system, and I've not found any better in this size range. It's pretty hard to argue that personal fit and how a pack carries its load should be the dominant criteria when shopping for a pack.

So... let me contradict that and say, the Deuter is not my pack of choice in the 50-55L range. It should be, based on the wonderful suspension, but it has a few features that don't fit my personal style. Mainly, that sleeping bag compartment zipper (that I don't need) minimizes the size potential of the exterior mesh pocket. The lid compartment is very small compared to the competition; much of the Deuter's lid is just flap material. And no matter how much I fiddled, the shoulder straps rubbed a wee bit against the sides of my neck. These are quibbles that when added together, convinced me to go in a different direction.

For most people, I would recommend this pack wholeheartedly. It just wasn't for me.

4 5

How to manual

This is the first pack I have purchased that I did not buy in a store, so, it would have been great if it would have come with a "how to" on fitting it to my body. So that took a good amount of time to figure out. The buckles feel a little weak at times, I worry about snapping them if I go to fast, so take your time and you should have no problems. The loops at the top of the pack are great for attaching bulkier gear. I have my sleeping pad attached to mine with webbing. I believe you can never have too many pockets and this bag is great of people like me. There is always a place for everything. From my 2 (32 oz) water bottles, to sandals to cash and identification items. I've taken it out twice now with no more than probably 40L of gear. And so far its been great. I'm excited to see what 50L+ feels like. I'm sure it will be great. I view this pack as a great option for extra-light campers or weekend explorers.

4 5

Perfect pack but worried about durability especially with buckles

I would love to give this five stars because I tried on 10+ packs in this category (including the heavier Deuter Aircontact 55+10) and this one came out on top. But I am a little worried about durability, especially with the thin skeletonized buckles. The hip buckle didn't release cleanly the first time I wore this and almost snapped it off as I was trying to get 50lb off my back.

First criticisms - I would give 5 stars if these two issues were fixed:
1) Should have some sort of rotating hip belt (it would only add a few ounces but make for a better fit after a long day of 10+ miles on the trail)
2) the buckles are too skeletonized (too thin). They are too thin and could break very easily. You could easily break them by stepping on them around camp, falling against a rock on the mountain, or even the first time I had to take this out with 50 pounds, when I unbuckled it the hip belt buckle caught and didn't cleanly release from the buckle, and if I didn't catch the 50 pounds with my arms, the one arm of the buckle surely would have snapped. Even though you can buy a replacement hip belt buckle (which is the most important) which is sturdier, you can't replace the other buckles on here since they are sewn in.
3) I wish it had a few more lash points to tie gear (hard foam sleeping pad) to, like on the bottom of the bag

Second praises:
1) carries heavy loads up to 40 pounds very well, and can carry loads up to 50 pounds pretty well
2) carries the weight nice and close to your back
3) the kangaroo pouch on the back is great although I wish it was a little more flexible to put more gear into
4) lightweight
5) perfect size for me for weekend trips (the 40 would be too small)
6) easily compresses down to be a 35-40L bag with the side straps if you don't carry that much gear, but still gives you the flexibility to have a nearly 60L bag with the top fully stuffed.
7) moreso than other bags, the weight is loaded vertically and (depending on how much you compress with side straps) very tight against your back which I personally love since I hate hiking up some mountain totally hunched over to counterbalance some big ass weight on your back
9) has adjustable positioning where you can choose where the shoulder straps attach to the back, to accomodate large/small torsos
10) fits awesome

The bottom line is that it fits awesome. I am 5'11" and 170lb and normal lean/athletic body type, and I can't tell you how bad many other manufacturers fit.

I also got the Dueter ACT 32 this year and think that is a great fit as well.

Responded on

I put my sleeping pad on top. I just purchased webbing with 2 D rings attached to one end and attached it through the loops on top of the bag.

5 5


This pack is incredible! It is very easy to pack. I don't often use the sleeping bag compartment divider, but I do use its zipper at the bottom to better arrange items. The hydration sleeve is very large - it fits a completely full 6L MSR dromedary bag with no problem. The pack is also highly adjustable. It didn't take me long to find a comfortable set up when carrying a 40-lb load. The hipbelts on this pack are also great. They are stiff vertically so they transfer and carry the load well, yet they are flexible horizontally so they wrap around well. They're also very well padded. Why don't more manufacturer's do this?? The back-padding on this pack is also very comfortable. Most packs I have used seem to have this hard metal bar at the bottom that sometimes digs into me, but this pack does not. The air-contact system does a decent job of keeping your back cool and unlike Gregory or Osprey, it does so without pushing the load way off your back.I decided to go with this version (the 50+10) over the 40+10 version simply because it only weighs a couple more ounces but has 10 liters more capacity. The +10 just means that there is a flap inside which you can move up to get 10 more liters of carrying capacity (the top lid can move up too).Some cons: The hip belt pocket is kind of small and there is only one on the right side. It isn't mesh though, which is a plus. The biggest con is that the side pockets on the pack are really small - they barely fit a 1L nalgene and I feel like they might break if I do stuff one in there.Over all, this is the most comfortable pack I have ever used. I feel like I could go on a jog with it when it's fully loaded. If you want to securely carry 20 - 40 lbs worth of gear for miles and not feel sore at the end of the day, then this pack is for you.

Unanswered Question

Question about the ski carry for this...

Question about the ski carry for this bag:

This picture looks exact the same as the Deuter ACT Lite 45+10 SL Pack (Women's) on this website, except the color. And the ACT like 45+10 SL pack can carry the skis A-frame. Then why cannot this one carry ski?

Deuter ACT Lite 45+10 SL Pack (Women's) on this website