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 Post subject: Ventilated Tropical Expedition pants
PostPosted: Tue Dec 08, 2015 3:57 am 
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So I've been studying "Technical Apparel Design" (http://www.kpu.ca/technicalapparel) at a school in Vancouver for a year, and this was my final project.

Anyway, long story short: I have a friend who works for a company that conducts expeditions into the jungle to locate MIAs, and they are not happy with current options on the market. I decided to give it a go. The general idea is that you'll be more comfortable if the fabric doesn't stick to your skin, so I incorporated ventilation features into the legs, behind the cargo pockets and the slit pockets. It could also facilitate quicker drying, but humid environments aren't really known for the ability to dry out clothing...

Profile view:
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Front. You can see the ventilation channels on the lower legs. There is mesh underneath so the bugs will stay out.
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Back. Back vents are double spaced (4"), I figured you are less likely to snag on stuff on the rear. Reinforcement tab on the bottom, as it's a commonly worn out area.
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Waist with internal belt. The webbing is slightly elastic, and closes with a G-Hook (not an ITW, but it should have been). HANK pieces for the holes, so they'll be durable enough. It's removeable for washing etc., can you could replace it with anything less than 1" if desired.
Both the front and back slit pockets are made of mesh, so they'll breathe. Durability isn't a huge issue here, since it will be covered by a shirt in most cases.
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Another view. Belt loops have a top loop to accept suspenders. I would think that wearing the pants loose with suspenders might be a smart idea when you're not wearing a backpack. Haven't designed the suspenders yet, but my idea would be something primarily out of mesh. Ignore the female mannequin, the male at work was too big 8)
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Cargo pocket. There are 2 slots that allow for airflow. There is mesh underneath it, but the internal walls are solid so your content won't rip it out.
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If you'd like, here is the post that I made for our presentation. It's 30 mb so it might take a while to load.
http://noratactical.com/files/poster.pdf

Some notes:
- The butt has pretty much no shaping to it. It does need some more shaping to allow for full mobility. Don't know what happened, as my block did have the needed shaping...
- One-off cargo pants are a fucking pain in the ass. The pockets themselves took something like 4 hours.
- Good machinery is fucking key. Bartackers with wobbly pedals are kinda scary, but I only messed up 1 out of ~60.
- It's the first pants I've ever made.
- There is an internal shock cord in the bottom cuff, so you can tighten them real good around your legs to keep bugs out.
- The user testing (in an environmental chamber) didn't prove anything, so I actually have no clue if the vents add anything or not.
- The pants are designed to be economical in production, and I had this idea that internal seams would snag less than external flat-felled seams.
- Fabric is 100% polyester.

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 Post subject: Re: Ventilated Tropical Expedition pants
PostPosted: Tue Dec 08, 2015 5:47 am 
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Joined: Thu Apr 22, 2010 2:21 am
Posts: 1163
Location: Canada
Looks sweet. Not sure about the seams though; I certainly get the idea behind internal seams to reduce snagging, but don't these put more pressure on less fabric?

That's more or less a rethorical question as you know more than I do, anyway.

Are the pocket vents only open on the rear, or both? I could see that being a major snag risk if they're open on the front.

One addition I can think of: underfeet cord to prevent them from running up, particularly to reduce the likelyness of pests getting in.

Welcome to Canada, didn't know you were around :lol:

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 Post subject: Re: Ventilated Tropical Expedition pants
PostPosted: Tue Dec 08, 2015 7:14 am 
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It does technically put more pressure on the seam if caught, but I don't really see how you'll blow them out unless you size them wrong. I've never seen Dickies blow out and they have the same seam, and I've seen some pretty beat ones over the years.

Pocket vents are front only, but it does stay pretty flat and towards your front of thigh. Snagging is a risk, but for the most part I'm not too worried. The walking pace in dense jungles is pretty stupid slow. However, testing will show.

I wouldn't want any cord under the shoes, due to all the shit on the jungle floor. Boot hooks is an idea, I just wasn't fully sure about how to incorporate them and I didn't have any hooks. I got some that in theory could be threaded onto the cord in the hem, but I left them off since they looked kinda ghetto. Good point though.

Been here for a year. Ran into Ferro once, but other than that I've been keeping kind of a low profile and focused on school and work.

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 Post subject: Re: Ventilated Tropical Expedition pants
PostPosted: Wed Dec 09, 2015 3:43 am 
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Joined: Thu Apr 22, 2010 2:21 am
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Good to know for the seams. That was a purely theoretical thought on my end; indeed sizing is the key.

Excellent idea on hooks. That's a good alternative way to make sure they don't ride up.

Going back right after you finish?

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 Post subject: Re: Ventilated Tropical Expedition pants
PostPosted: Wed Dec 09, 2015 6:00 am 
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I'll stick around for a bit, depending on the work situation and whether or not I can get a proper work permit that's longer than a year...

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