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Gregory Optic 58L Backpack

Gregory Optic 58L Backpack is rated 3.9 out of 5 by 11.
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3.9 Star Rating

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Product Description Item No.   10363935

The Gregory Optic 58L Backpack features an ultralight design with the support to comfortably carry heavier loads. A super strong yet lightweight frame made of 7001 aluminum ensures your cargo is stable when packed to the brim. This frame efficiently transfers weight to the padded lumbar support and hipbelt, and side compression straps help manage your pack size to prevent shifting and keep the weight centered on your back. A cushy, ventilated shoulder harness pairs with the breezy backpanel to promote airflow and prevent sweat build-up. An internal sleeve with a hose port integrates with your hydration bladder, and conveniently angled stretch mesh pockets on each side can hold onto your water bottles. There's a pocket in the lid to keep smaller items organized and easily accessible, but you can detach the lid to further shed weight if you'd like.

FEATURES of the Gregory Optic 58L Backpack

  • Aerospan suspension with EVAP moisture wicking shallow-depth ventilated backpanel
  • Ventilated, dual-density focusform shoulder harness and extra supportive hip belts with targeted comfort zones
  • Leaf-spring lumbar pad for comfortable, energy-saving load transfer
  • Ultra-light 7001 aluminum perimiter frame with anti-barreling support
  • Included custom fitted raincover stows in the top pocket for quick access in unexpected showers
  • Removable top zippered pocket to shed ounces and swap-in included ultra-light weather flap to stay protected (stows in top pocket)
  • Sunglass quickstow system on shoulder harness for quick, secure and scratch-free access to your shades without taking the pack off
  • Quick access on-the-go water bottle stow access on both the right and left sides
  • Oversized, durable front stretch mesh pocket for quick access orgainization
  • Dual zippered hip belt pockets provide secure, easy to access storage
  • Dual stretch mesh side pockets with large capacity for bottles, camp sandals, trekking poles or
  • Dual adjustable attachment loops and upper shock locks for trekking poles or ice axes
  • Ultra-light V-compression system on side and bottom of bags
  • Lower side compression pass-through on side pocket for over/under option
  • Gear attachment points on top pocket and main body

- + Product Specifications
Features: Carry-On Size, Sternum Strap, Hip Belt
Weight: 40.3 oz
Fabric Details: 100D HD Tenacity 100% Nylon
Pack Fabric: Nylon
Weight Capacity: 35 lbs
Pack Pockets (+ main compartment): 4
Best Use: Backpacking, Hiking
Pack Capacity: 58 Liters / 3539 Cubic inches
Trip Length: Weekend
Frame Type: Internal
Pack Access: Top
Rated 5 out of 5 by from best pack I own just did a 5 night/6 day 100 mile backpack in Sequoia with a lot of climbing. Starting weight was 33 pounds. ending weight was 21 pounds. This pack fits me perfectly and was super comfortable. I had zero issues and this will be my go to pack for longer trips.
Date published: 2018-08-01
Rated 4 out of 5 by from Great pack with some opportunities for improvement I really love everything about this pack – it’s adjustable, lightweight and hugs your hips – except the durability of the plastic hardware is questionable. On the second day of backpacking (with only 28lb total pack weight), the plastic on the synch strap that goes over the top opening of the pack broke while synching it down. I called Gregory and they said to send it back to the retailer which I did and ended up buying another one. I think Gregory went too far in trying to get this pack (size large) down to 2.52 lbs. I would give this pack 5 stars if the hardware was more durable – everything about it is wonderful except for the cheap plastic.
Date published: 2018-06-19
Rated 5 out of 5 by from Great lightweight bag This bag carries easy. I would recommend it to anyone who believes the best feature is less weight. I'm 5' 9" 175 and a medium was a good fit.
Date published: 2018-06-18
Rated 2 out of 5 by from Lumbar Pad is Irritating The lumbar pad has a seam running along the bottom where a piece of heavy duty nylon is sewn. I could not feel the seam while wearing the pack with just a sleeping bag inside for filler, but when I put 15 lbs of gear inside (pack is rated for 35 lbs), I could feel it rubbing against the small of my back. It was irritating enough that I felt chafing would develop with continued use. I returned the pack, which is a shame because I really liked the rest of it. If the lumbar pad gets redesigned and that seam removed, I would definitely revisit purchasing.
Date published: 2018-06-16
Rated 5 out of 5 by from Great option for lightweight backpacking I think this is a great pack for multiple day, lightweight backpacking. I bought it for a section hike of the AT with my son. I already owned the Osprey Exos which is very similar to this pack. However, the Optic exceeds the Exos in a number of areas. First the hip belt is much more comfortable and make the load more easy to carry. The hip pockets are large enough to actually hold a phone and other essentials. And it includes a rain cover which cost me an additional $30 for the Exos. The downside is as a lightweight pack I don't see this pack lasting as long as some of my other heavier and sturdier packs. Yet, if you are looking for an affordable lightweight option the Optic is a good choice.
Date published: 2018-05-15
Rated 5 out of 5 by from Ultralight and comfortable I bought this for a JMT hike, which I haven't done. However, the bag performed really well during a 3-day test-run. It's lightweight, comfortable, and does everything I want in a hiking backpack.
Date published: 2018-05-09
Rated 4 out of 5 by from Light weight very comfortable After conducting significant research looking for a pack that was around 60L I bought the Optic 58L. I could only find a couple of reviews on this pack and one mentioned the buckles were cheap and broke easily. I have a Stout 35L, which I really love and is built with the highest quality. So I took a chance and made the buy. The pack arrived and when I unpacked it, I was amazed at how light it felt, especially for a full framed pack of this size. I loaded it with all my gear for an overnight trip and tried it on for fit. I am 6' and weight about 220 lbs. I am fairly broad chest and shoulders. I bought the large and it fits very comfortably. It is a little snug through the chest but not to the point of feeling uncomfortable. Likely it is just a matter of proper weight distribution and adjustments. I unpacked my gear and repacked it to try and move the weight around a bit for comfort. When I cinched up the strap that goes over the top of the main pack, the buckle busted into pieces. I knew exactly what the other reviewer was talking about. This was only the third time I had cinched the strap down so I was more than a little disappointed in this. The buckle is made of a thin brittle plastic and should never have been put on a strap that will have any pressure on it at all. I did not want to replace the buckle with the same thing so I looked for an alternative. I found the perfect fix at my local Sportsman's Warehouse, see photos. The new hook styled system was easy to put on and is very strong and secure. This is what Gregory should have used in the first place. So no that my pack was fixed, to the trail I went. My pack load was about 40lbs, which is the pack's max load rating. The pack handled it great and it felt comfortable the entire time. Great ventilation, great comfort and all the feature worked perfectly. Overall, I am very pleased with the pack and would have gladly given it 5 stars had it not been for the cheap buckle issue. The buckle is my only complaint.
Date published: 2018-05-08
Rated 3 out of 5 by from I wish it fit better. The design of this bag is fantastic, love the color, and good capacity, but in the end the thing that matters the most is comfort. The majority of the pressure was actually below the lower back pad. Where the seam meets the pad it just pushed too much in my lower back so I had to return it. I wanted this bag to work so bad. Love the bag, please try again with the padding and ergonomics.
Date published: 2018-05-02
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- + Size Guide

Gregory Men's Packs

Gregory backpacking packs are available in a size range. Please check the PRODUCT FEATURES and / or SPECIFICATIONS for the torso range measurements of each size of a pack. The steps below are a guide for measuring your torso size.

The hipbelts on Gregory backpacking packs are adjustable to fit a range of sizes. A simple rule of thumb is that the ideal distance between the ends of the hipbelt pads after tightening should be 3 to 5 inches. However, the most important criteria are that the hipbelt wraps clear over the side of your body and that it rests 1 inch above your iliac crest. This allows proper load transfer to your skeletal structure, which maximizes comfort and minimizes energy expenditure.

1. Put your chin to your chest and feel for the big bone protruding on your neck at the top of your spine. That's the C7 vertebra.

2. Feel your hip bone, the top part of this is your iliac crest. Find the spot on your back that is level with the top of this crest.

3. Have someone measure the distance between these two points, following the contours of your spine.