What exactly is the Pack Converter and how can it be used?

14 thoughts on “What exactly is the Pack Converter and how can it be used?”

    1. G’Day Mark –

      thanks for your suggestion for a carry-on sized Pack Converter Duffle. This would certainly fit in with the smaller backpacks people are carrying these days as well as with the increased use of carry-on bags.

      Please know that ALL product suggestions are logged and discussed with the Design and Development team. I can’t promise you how long any particular concept may take to come to market, but I assure you that I think this suggestion is well worth pursuing.

      Thanks again for sending it in!



  1. Would love to see a video of this, cant find one online, and REI doesn’t stock them locally. Seems like a great product, just under marketed and little info out there 3rd party on the interwebs.

    1. G’Day

      Thanks for asking about the Pack Converter Duffel. It really is a staff favorite here at our offices in Boulder – our Sales, Customer Service and Marketing Team members travel with them all the time.

      We have a list of products which we’re creating videos for, and the Pack Converter is on that list. Because it’s such a versatile product, there are a number of features which are well worth explaining visually.

      In the meantime, in order to see and check out the Pack Converter, we would recommend contacting an independent retailer which has a little more flexibility with product orders than REI. In the Dallas area you could check with our colleagues at Whole Earth Provisions. Please drop me a line at info@seatosummit.com if you would like more details on how a special order might work, or more details on the product itself.



    1. G’Day Chris –

      Thanks for letting us know that you would be interested in a Small size Pack Converter Duffle.

      Smaller backpacks have become more popular than they were a few years ago, as more people take shorter backpacking trips, or use backpacks for many other sports such as mountain biking and ski touring. At the same time, there has also been a move towards backpacks which will fit airline ‘carry-on’ specifications.

      All of this argues for a Pack Converter Duffle in a size around 40 – 50 Liters.

      Fortunately, our Design and Development department is working on some interesting new gear transportation concepts along these very lines.

      We can’t give you any details at the moment, but we’ll put information on http://www.seatosummit.com as soon as the new products hit the market.



      1. Cool. I do ultralight backpacking and use and MLD Prophet backpack (30L?) I also do regular air travel. So I’m looking for something very lightweight and on the smaller side that I could stow in a backpack when I don’t need it or use as a checked bag when I do. I looked around and amthinking your silnylon duffle might actually meet my needs if it’s durable enough to check.

  2. G’Day again, Chris

    The existing Pack Converter Duffels are made of a 210D ripstop nylon, which was chosen for its relatively high abrasion strength combined with its reasonably light weight. Any new product in this range will be made of materials of a similar weight.

    Given this, a 30-50L version of the Pack Converter Duffle would weigh around 18ozs/500g, which is heavier than most ultralight backpackers would consider carrying. (By the way, the MLD Prophet lists as 48 Liters).

    The UltraSil Duffle is made of a 30D ripstop nylon, and while its high thread-count and siliconization give it a relatively high tensile strength, the level of its abrasion resistance means that it is not suitable for checking as luggage. (You might get away with checking it if there were only soft objects inside it, and the baggage conveyers were new, modern constructions – but I’ve had holes worn in a 1000D Cordura duffle on old-fashioned baggage handling machinery before now).

    Let me know if this helps: you can reach us at info@seatosummit.com – please put ‘smaller Pack Converter Duffle question’ in the subject line



  3. Hi. I have an Osprey Ariel 55 LT Women’s Pack that I would like to protect from the airport luggage handlers. I would like to confirm the pack Converter will work “As a rain cover for your backpack when you are hiking”. Judging by your pictures, I’m not sure if this piece of equipment will work as a rain cover WHILST YOU ARE WEARING THE PACK or is it only when the pack is on the ground? (I like the idea that I may not have to buy a second piece of equipment). As I only weigh 50 kilos and it is recommended that I carry a maximum of 10-15% of my body weight – on a 36 day trek on the El Camino, I’m not sure that the additional weight of this converter can be justified, but I can’t find any alternatives?

    1. G’Day Debbi

      Thanks for writing to us about the Pack Converter Duffle. This product can be used as a lightweight duffle bag (perfect for stowing a backpack in when checked as airline baggage) and as a backpack rain cover.

      When used as a rain cover, the horseshoe-shaped opening of the duffle is unzipped and stowed in a pocket – the duffle can now be pulled over the backpack allowing the harness to project through the zippered opening. Because all of the seams of the duffle are seam-sealed, the duffle works as an effective rain cover for general backpacking use.


      The El Camino requires that you keep your pack weight down to as low as possible (regardless of your body weight). Given the fact that the Pack Converter Duffle in Medium weighs 20ozs / 570g, we would not recommend it for this application.

      I would be happy to discuss options for protecting your pack during transit and keeping your gear dry while on your trek; I’d also be happy to share some gear tips with you from other end-users who have hiked the El Camino and reported on their experiences. Drop me a line at info@seatosummit.com and put “El Camino – questions for Baz” in the subject line



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