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Mammut Trion Spine 50L Backpack


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Trion Spine 50L Backpack

Everyone can agree that multi-day backpacking treks and rugged alpine mountaineering missions aren't exactly a walk in the park, but they don't have to bring on the aching shoulders and sore backs that you might be bracing yourself for when you set out from the trailhead, at least not with the Mammut Trion Spine 50L Backpack. Outfitted with Mammut's new Active Spine technology, this pack offers stability, comfort, and a versatile size for an endless range of pursuits in the mountains. With Active Spine, Mammut was trying to find a suspension system that keeps your shoulders and hips happy as you hike, but wouldn't sacrifice the stability of the pack's load in doing so. Their solution was to allow the hips and shoulders to move independently of the pack's body, but to keep the two connected with a flexible spine-like system to ensure that all that movement won't set your load rocking back and forth. The result is an ideal balance of freedom of movement and weight distribution that'll have you cruising in comfort over even the steepest and most rugged terrain.

That's not where the innovative design of this pack ends though. It's got a handy pull tab that adjusts the Active Spine system up and down, helping the wearer find the size that's right for them in an instant. For convenience there's a large easy-access front panel that lets you reach inside the pack without having to root around from the top, but if you did want to root around from the top you could, thanks to the top entry system that features a protective flap. With gear loops, compression straps, and lots of pockets, you've got tons of space to bring along all the gear you need, along with ice axe, trekking pole, and ski carries that let you take on whatever adventure you so choose.

  • Innovative pack for comfort and stability on challenging terrain
  • Active Spine system balances stable support with freedom of movement
  • Height adjustment system offers multiple sizes in one pack
  • Durable fabric withstands the wear and tear of rugged environments
  • Large front panel makes it easy to access the main compartment
  • Ice axe, trekking pole, and ski carries offer versatility
  • Additional gear loops let you bring along important gear
  • Pocket storage throughout keeps your valuables safely tucked away
  • Item #MAM01BG

420D nylon
Active Spin
Shoulder Straps
padded, adjustable
Waist Belt
Hydration Compatible
top, front
[external] 1 top flap, 1 hipbelt, 1 shoulder strap, [internal] 1 front flap, 1 top flap,
Gear Loops
Ice Axe Carry
Trekking Pole Carry
side straps
26 x 15 x 7in
Claimed Weight
4lb 13.6oz
Recommended Use
backpacking, mountaineering
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?


>Rating: 5

Holds Weight Great!

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

Personally, I think this is the best pack for adventuring into the alpine to work some hard routes. When doing steep approaches or scrambling around boulder fields and difficult moraine and you have a full trad rack maybe some iron and a couple of ropes you want a pack that works with you. and not through you off balance while on more technical terrain. I used this pack on a very steep approach with some 5.4 scramblings in areas and never felt uncomfortable with a full rack and a rope on my back the spine system really helps the weight stay centred. However, the shoulder padding could be slightly better and there are other packs on the market with more paddling in that area. So, if you are a skinny lad and have boney shoulders and collar bone you might have slight uncomfort after some hours in the pack. Personally, I did not have this issue but my friend which is 6'2" and 150 lbs who used the pack for a couple of hours on the approach did mention some stitching that dug into his shoulders a bit. However, this might be able to be avoided once you get a feel for the pack on you own body.

Would you be able to pack a compressed sleeping bag in the lower compartment?

>Rating: 4

Great weekend bag.

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

Rookie camper/hiker here, but gotta tell ya, the active spine set up is life. I was packing a two day 45lb bag, and I was able to knock out a 26 mile hike (first one of the season) with ease. The bag actually seemed to contour to my back, and it made for a really comfortable ride. The only bummer for me is that the bag didn't have a spot to carry the tent or sleeping bag externally, tightened up the bag.