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Ultralight waterproof backpack
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Jan Rezac
(zkoumal) - MLife

Locale: Prague, CZ
Ultralight waterproof backpack on 12/15/2008 21:32:47 MST Print View

In past few years, I'm using a light, waterproof pack I made. The trick to make it light and waterproof is to separate the load-bearing harness and a waterproof drybag. The latest, third version weights 320 grams (11 oz) and looks like this:

waterproof backpack

If you like it, you can find detailed instructions and patterns here:

The website has some problems right now, you can also download the instructions here:

Edited by zkoumal on 12/20/2008 20:45:16 MST.

Joe Clement
(skinewmexico) - MLife

Locale: Southwest
Backpack on 12/15/2008 22:14:15 MST Print View

That's interesting. Now I have to go look up the conversion from grams to ounces.

Nate Meinzer
(Rezniem) - F

Locale: San Francisco
Conversion from grams to ounces on 12/15/2008 22:17:18 MST Print View

Or just go to and type "320 grams to ounces" in the search bar and it will return the result of around 11 ounces.

Gotta love google for all the fluid ounces to cups to cubic inches to liters to etc. when comparing products.

Unknown abc
(edude) - F
Unit Conversion on 12/15/2008 22:20:50 MST Print View

Joe, I have this bookmarked to make ALL Unit Conversions a snap.

Bookmark it and you'll never have to do the math again!

Just my 2 cents.

Cool backpack, Jan

Paul Tree
(Paul_Tree) - F

Locale: Wowwww
Awesome Backpack Pattern on 12/16/2008 01:19:29 MST Print View

Nice pack & fantastic directions! I am going a similar way with my own pack frame, but so far it's not so light.

You may be able to get some feedback on dry bags from the users of the Arctic 1000 packs. They have a Pacific Outdoor Equipment Pneumo LTW. 50 and 65 liters. Chosen because of the welded seams.

There was a dry bag roundup article in 2006: Link

Edited by Paul_Tree on 12/16/2008 01:24:03 MST.

Graham Wilson
(grawil) - F
Looks nice, but links do not work? on 12/16/2008 21:22:57 MST Print View

The photo looks great, but the link to the instructions does not work?

Joe Clement
(skinewmexico) - MLife

Locale: Southwest
Pack on 12/16/2008 21:30:41 MST Print View

I drove to the town where I bought my sewing machine, and the thousand year old man I bought it from still has his shop. He checked it out, and showed me how to thread it again. Been 15 years since I did boat canvas, but I think I'm going to have to make one of these. And a bivy.

Jan Rezac
(zkoumal) - MLife

Locale: Prague, CZ
RE: Looks nice, but links do not work? on 12/16/2008 23:35:05 MST Print View

The site is online again.

Edited by zkoumal on 12/17/2008 19:17:51 MST.

Erik Graf
(VanGo) - F

Locale: Southeast
Looks great on 12/18/2008 12:52:24 MST Print View


Could not get the link to work - but like what I see so far. Been playing with a similar project. Nice work.

Just curious - where do you hike in the Czech Republic? Drove from Amsterdam to CR about 15 years ago and stayed in Opatov. Prague is one of my favorite cities - beautiful with beautiful people....

Rog Tallbloke
(tallbloke) - F

Re: Looks great on 12/18/2008 13:29:07 MST Print View

Great looking pack Jan. Site seems to be down again though.

Paul Tree
(Paul_Tree) - F

Locale: Wowwww
Moonbow Gearskin Plans, Arctic 1000 Pack Plans, Ultralight Pack Frame Plans on 12/19/2008 10:05:13 MST Print View

I am trying to allow others to find this great pattern via Google by adding a couple of search terms they may be using.

Someone is asking for a pattern for this on but I can't join, I only have a yahoo address. Wah. ** LINK **

If someone is a forum member there, post a link to this Thanks!

Moonbow Gearskin Backpack Plans
Arctic 1000 Backpack Plans
Ultralight Pack Frame Plans
Alternative Pack Frame Plans
Ultralight Lightweight Waterproof Backpack Plans

Edited by Paul_Tree on 12/19/2008 10:26:36 MST.

Greg Mihalik
(greg23) - M

Locale: Colorado
Re: Moonbow Gearskin Plans, Arctic 1000 Pack Plans, Ultralight Pack Frame Plans on 12/19/2008 10:20:46 MST Print View

FYI - I know you said 'Google' but -

The forums get indexed only a few times a week, so if you're expecting to find them with the BPL search give it a few days.

Also, as you may know, even then the BPL search is less than stellar.

And for others who may not know - to use Google on this site include the string

in a Google search bar to restrict the search to just BPL.

Jan Rezac
(zkoumal) - MLife

Locale: Prague, CZ
Ultralight waterproof backpack - instructions download on 12/20/2008 20:45:55 MST Print View

The website has some problems right now, you can also download the instructions here:

J Thomas Peterson
(tpeterson1959) - MLife

Locale: Southwest
Great Idea! on 12/24/2008 09:50:54 MST Print View

Very nice design, and I admire it's simplicity! Thanks for sharing.

. Callahan

Locale: Stoke Newington, London, UK.
Conversions and links! on 12/27/2008 18:42:29 MST Print View

If you use FireFox you can use the HyperWords add on which will make ANY text interactive, to convert, translate or link etc....

I'm an IT dummy so I love this as I can convert weights, volume, currency etc, easily, without having to type in or open a new page for the info I want.

This add on gets used every online session.

I also really like that pack idea!

Keith Selbo
(herman666) - F - M

Locale: Northern Virginia
Volume on 12/28/2008 11:12:58 MST Print View

what is the volume capacity of the pack and is there a maximum recommended load (weight)?

Jan Rezac
(zkoumal) - MLife

Locale: Prague, CZ
Ultralight waterproof backpack - more numbers on 12/28/2008 19:12:16 MST Print View

I guess the volume is a bit over 30 l what equals exactly to 2000 cuin. Manufacturer of the drybag says it's 37 l (~ 2222 cuin).

I have carried about 10 kg / 20 lbs in it and it is still quite comfortable. It would be possible to carry more if the pack was higher, because it holds its shape well when loaded. The limitation is in its short torso length, that is determined by the width of the sleeping pad.

The first version of the pack was made with wider pad (60 cm / 24 in), and it I used it even for a week long trip carrying all the food. Later, I switched to regular width pad, that small pack is just what I need for weekend or three days.

Edited by zkoumal on 12/28/2008 19:13:34 MST.