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Marmot Graviton 38L Backpack


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Graviton 38L Backpack

Spend a night, or a carefully packed weekend, in the woods with everything you need inside Marmot's Graviton 38 Backpack. This pack's Ventilated Airflow Suspension keeps you cool and comfy on the approach, while the Tubular Aluminum Frame ensures stability so your gear doesn't swing with each step. Marmot padded the shoulder straps and waist belt with airmesh for breathable comfort.

The Graviton is a traditional top loader with an extra sleeve and hanging clip for your hydration reservoir. There are two attachments for trekking poles or ice tools. Marmot's pocket configuration for this pack includes a large top lid for maps and much-needed trail essentials, an internal mesh pocket for valuables like keys, and waist belt pockets for energy gels and lip balm.

  • Ventilated Airflow Suspension
  • Tubular Aluminum Frame
  • Padded airmesh shoulder straps and waist belt
  • Top access
  • Hydration port and hanging clip
  • Dual tool and trekking pole attachments
  • Top lid pocket with internal mesh pocket and key clip
  • Waist belt pockets
  • Item #MAR00TL

[main] 70D nylon ripstop, [reinforcements] 100D nylon ripstop
40L (2440cu in)
Ventilated Airflow Suspension, Tubular Aluminum Frame
Shoulder Straps
Waist Belt
yes, padded
Hydration Compatible
yes, port and hanging clip
2 waist belt, 1 lid, 1 internal lid, 1 external stash
Trekking Pole Carry
27.5 x 12.5 x 11in
Claimed Weight
2lb 6oz
Recommended Use
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 1

Material shatters easily, poor quality.

I've used it several times

The design is good. The backpack has nice features. Great ventilation for the back and the front packet is very useful; however, the material shatters easily. I took this pack on one hike up the Angels Landing and made a hole at the bottom of this pack just by putting it down on the ground. After two day hikes, I discovered three holes made by branches. The shoulder pads are good and the pack is well balanced.

>Rating: 5

Lightweight, functional hauler

Marmot did a great job with this 38L pack. I just got this pack at the beginning of the summer season and love it. I have yet to use it as an overnighter, as my camera gear and fly fishing gear use a little too much space for the size of my sleeping necessities, but this pack can be easily used as an overnighter for many load conscious trekkers. I do use this pack as my go to for all day hikes and fly fishing treks. It has technical points for gear like an ice axe, bottom load (foam pad etc) poles and compression side straps that help hold things like tent poles and fly rod if not inside the cavity. The brain is nice, but my only qualm with this pack is how the brain tends to want to slide off the sides for me, however I may be able to adjust something so it’s always on the top of the frame. While intended for lighter use based on its weight and, size and fabric thickness, I find that it is durable and has a great suspension system closer to Anna Osprey design until you get to the hipbelt which is non rigid where the hip belt pockets exist. I enjoy the zipper pulls, large zip access and brain compartment. It ventilates extremely well in the back and has a great purpose in my closet.

>Rating: 2


I loved he look and have purchased many products from this company but the pack was poorly conceived with respect to two features. First was the shoulder straps, which were poorly padded and uncomfortable. I had weight proportioned correctly and not overburdened but hour 6 of a 9 hour hike was when the scant padding became apparent. The second was the quick release straps that had a mind of their own. I really wanted to like the pack for all the features they got right.

>Rating: 5

Perfect For Overnight Trips

I've put it through the wringer

This was my first midweight pack, and I gotta say its really nice having something that can haul gear for short trips but does not have the weight of a 70L pack. I got this for doing long day hikes, but was blown away with how much I could comfortably carry. I've even used it for weekend backpacking trips, which definitely overloaded the pack (mainly because the waist belt just wasn't meant to bear that kind of weight) but I absolutely love how well this thing breathes. The air mesh ventilated suspension is legit! Most of the hikes I do are in Utah so it gets really hot and its nice to have a pack that so ventilated. I would recommend it to anyone looking for a pack to do long day trips and smart packed overnights. Any questions, feel free to reach out!

Hi there, can you measure the height of the frame of the bag? As well as the height of the bag with the top removed? I'm looking for something that will work as a carry-on on a plane and I'm afraid this might be a bit tall. Thanks!

Dimensions from another website: 27.5" x 12.5" x 8.75"