Hyperlite Mountain Gear’s Porter 70 Backpack is one of the highest capacity packs available today from an ultralight backpack manufacturer. Weighing 31 ounces, the 70-liter Dyneema DCF Porter is designed for packrafters, backpackers, and mountaineers who need additional pack volume for larger loads and long-distance hikes.
I tested this pack for nearly a year primarily for use as a winter backpacking and mountaineering pack, but also with an eye towards very long unsupported hikes lasting up to 2 weeks in duration.
The HMG Porter 70 has a spartan, climbing-style design with a single main compartment, three tiers of side compression straps, and a pair of long daisy chains on the front sides of the pack. The pack uses a roll-top closure which is secured using side straps and a top Y strap which can be used as an external attachment point for hauling additional gear on top of the pack. The pack also comes with a sternum strap, more daisy chains on the shoulder straps, and lightly padded shoulder and hip belt straps. While there is no external storage provided with the base model of the pack, it can be purchased with add-on hip belt pockets or a front external pocket that clips onto the side daisy chains.
The suspension system on the Porter 70 is very simple. It has a fully integrated back pad and two optional aluminum stays. This is coupled with a fixed hip belt which is sewn to the back of the pack.
Despite its simplicity, this pack provides better load-to-hip weight transfer than most of the other ultralight packs I’ve tested. The reason for this is simple. Most ultralight backpack manufacturers do not have permanently sewn-on hip belts or back pads, opting instead for replaceable hip belts and in many cases a removable or optional back pad. This translates into less efficient weight transfer because the hip belt, back pad, and backpack are not tightly coupled as a unit.
Having a sewn-on hip belt and back pad is a very desirable feature for a high-volume pack, particularly because a typical winter backpacking/mountaineering load exceeds 40 pounds of gear, water, food, and fuel. What is puzzling, is that the Porter 70 does not include load lifters. When fully packed, the Porter 70 pulls noticeably backward throwing the wearer off-balance. Adding load lifters would help counter this.
The Porter 70 is made using Dyneema DCF. While the fabric itself is effectively waterproof, HMG seam tapes the seams on the Porter 70 but they will probably leak under pressure if submerged. As with other backpacks, it’s best to line the inside of your pack with a trash compactor bag to keep the contents dry and augment with waterproof stuff sacks as required.
I have found it very difficult to use the Porter 70 backpack in winter or for 3 season use because it does not have enough external storage. Try as I might, there is something about my style of packing, gear organization, and gear list selection that makes it difficult for me to use the Porter 70 and hike the way I like to hike.
While I like backpacks with large main compartments, I like to pack so that all of the gear that I might need during the day is stored in exterior pockets which I can access quickly without having to open up the main compartment of my pack. I get cold very quickly in winter when I stop hiking to pull out gear that is deep inside my pack and it’s something I go to great lengths to avoid.
For example, I like to have instant access to glove liners, heavier fleece gloves, above treeline mittens, ski goggles, an extra fleece hat, a balaclava and face mask, sunglasses, maps, compass, pencil, rite in the rain logbook, snacks, an insulated water bottle, crampons, ice axe, snowshoes, a hardshell and dermatome sunscreen when I hike in winter without ever having to open the main compartment of my pack. I can manage this with my regular alpine-style winter pack, which has a floating lid with several externally accessible pockets, but there is no way I can organize this same gear selection in an easily accessible manner with the Porter: most of it has to go into the main compartment.
The same holds for 3 season backpacking. The Porter 70 does not have enough external storage for me to store a dripping wet water filter, platypus, 2 x 1 liter plastic bottles, a wind shirt, hard shell, rain pants, food, compass, map, hat, altimeter/gps, pencil, rite in the rain logbook, inReach mini 2, digital camera, dermatome and lip balm, glove liners, rain mitts, tarp, and plastic groundsheet that I like to keep on the outside of my pack when I backpack. I don’t take a lot of breaks when I hike and I don’t want to take even more in order to rummage around in my backpack for something. Plus if it’s raining, I like being able to get to my tarp and pitch it without having to open up my pack. Being able to store my tarp in an external pocket has saved my ass more than once.
I have tried rigging up all kinds of different accessory pocket systems on the Porter 70 to overcome its external storage limitations including adding additional accessory pockets to the shoulder straps, overloading the optional front pocket, adding a mesh crampon pocket, and attaching Gatorade bottles to the shoulder straps using elastic cord and cord locks. None of these experiments provided much satisfaction and overcame the fact that the pack has too little external storage for my preferences.
While the Porter 70 does come with the option to add pockets to the hip belt, these alone are still insufficient for my needs. The same goes for the add-on front pocket that HMG also sells for this pack, which clips onto the front daisy chains. While convenient and fairly large, it is open, so not a suitable storage compartment for extra gloves, hats, and electronics in winter.
Suggestions for Improvement
The Hyperlite Mountain Gear Porter 70 has a number of revisions and features added to it since I started testing it last winter, but I’d like to suggest still more because this pack and its wonderful suspension system have a lot going for it. Given the weight savings provided by Dyneema DCF, there’s little downside to modifying elements of the pack that would substantially improve its functionality.
- Add load lifters to the base pack
- Add an ice ax loop to the base pack
- Offer an optional crampon holder attachment like the one on HMG’s Ice Pack
- Offer a pair of closed side pockets that can be hung on the sides of the pack
- Offer an optional top lid w/pocket that can be attached over the roll-top closure.
Adding these options would help alleviate the external storage issues that prevent me from enjoying this pack fully today. The last time I spoke to Mike St. Pierre at Hyperlite Mountain Gear, building out add-on pockets and features were definitely on his radar, so I hope to see some of them become available before too long. After all, winter backpacking and mountaineering season are just around the bend.
Disclosure: HMG donates 2 packs for review.
Compare 1 Prices
- Amazon USUsed $14.24$18.98
Amazon.com Price: $18.98 (as of 09/22/2023 16:00 GMT-0400) Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.