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Our Alpine Packs are famous for their simplicity, fail-safe ruggedness, and outstanding performance level. They have been used on many Expeditions around the world over the last 30 years and have adapted well to general backpacking. McHale Packs are Custom Made entirely in Seattle Washington.

If you insist on minimum pack weights, McHale Packs offers these ultra-light packs. You may be able to find even lighter packs, but consider the mechanical advantage McHale Packs offer. Our packs comfortably carry more weight per cubic inch of volume and per ounce of weight. People that go out regularly year after year know that pack performance trumps pack weight. These are not fragile packs. They are made from our standard selection of tough US made and quality imported fabrics ( we tear test all of our fabrics to make sure they meet our standards ) and are built to our reliable high standards. Back in the mid 80s we called our climbing rucksack 'rocksac'. This is were the acronym SARC came from: Super Alpine Rocksac

Climbers with McHale Super-Sarc packs in the North Cascades near Eldorado Peak in 1992 . Jim Nelson and Mark Bebier checking out the McAlester Glacier. Jim and Mark did the 2nd ascent of the Infinite Spur on Mt. Foraker in 13 days in 1989 with McHale Super Sarcs. Over 20 years later people are still choosing S-Sarcs when they want the ULTIMATE in reliability and performance. Dan McHale photos. Click images.

Very Important......Click on the images below for detail pages - Everything you see in photos below is an option and can be mixed and matched on any volume of pack. To help figure volume compared to a pack you currently have, click here; Pack Volumes - Go Figure! Start with volume then add to that from example features in any pack photo. It is far easier to start with examples like those below and add or subtract features from them. Any feature that is seen on one pack can be applied on any other pack with few exceptions. P&G Bayonet Frame Extensions - example photo click here..... Bear cannister Page

Critical Mass packs are at the very bottom of the page.

Prices are on the detail pages after you click the thumbnail images below. For pack accessories click here or at top right corner of page at Sarc Accessories.

Pack examples below - click images.

Bumps Merkes , Panel Loaders

Above: LBPs 36, 37, 38 , LBP P&G 37, 39 click images or numbers - LBP 34, NEW LBP 35

Subpop
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Windsauk view Details

Sarc-chasm
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Popcan - view details

 


S-Sarc P&G
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UnLtd S- SARC P&G (S-Sarc+1",+2"....)
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S-SARC P&G
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S-Sarc P&G
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view - UnLimited+2

Black Byneema Grid & dyedFull Dyneema

 

 

 

6 packs below: Click color examples below of more Dyed Full Spectra packs.

 

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Critical Mass Packs; Critical Mass pack developement began back in 1977. They really hit their stride in the mid 90s and were ahead of their time then....and still are!

Notice: Critical Mass Packs are no longer made with Dyneema as shown in the detail pages. They are now made with Full Spectra fabric laminated to a Mylar/Dyneema backing (Cuben Fiber) which creates an ultra-strong and very water resistant pack.

Dyneema and Spectra are essentially the same thing with Spectra being the USA tradename for the fibers from Allied Chemical that make up the fabrics. Most of our suppliers have switched to using Spectra and at the same time have stopped coating it, so we are using various Spectra fabrics with various laminates to create the waterproof side. Dyneema is the product name for the fibers of the European company DSM. Spectra pack bottoms are included in the base price of CM packs.

Expedition climbers and backpackers appreciate the way Critical Mass packs can carry a load. These were the first packs we made, under the label Alpine Style, back in 1977. If you truly need a pack to carry loads that are 60, 70, 80, and 90 lbs, do yourself a favor and try one of these amazing packs. They are not the 'standard formula' packs found in stores. They are more like what people 'wish' internal frame packs AND external frame packs were like. They are a very different machine and the best big load packs on the market, as well as the lightest big packs (that actually work) . You can match the frame strength in the pack to your activity. We have the strongest dimensions and alloys of stays available. If the price throws you: a thousand dollar pack amortized over 5 years of GREAT trips isn't so bad, and they'll easily last ten years and more. The pack is not the place to save money - do that with the stuff you put in it! If you need or want to carry big loads, that activity is the toughest part of being out there - why not invest in making it enjoyable?

Bypass Harness Information Critical Mass Frame Strength Information Hip Belt Info

Critical Mass Lumbar Pad Information

Critical Mass II
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Super Critical Mass II Bayonet
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MB Critical Mass II Bayonet view details

Inex Critical Mass II Bayonet
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Packs below are color examples of Critical Mass packs

Above: Color examples of various Critical Mass packs.

"Big load, long trail & hard climb, all eliminate by my Critical Mass Alpine II Bayonet. I just focus to climb until summit and safety down. A great success on Mt. Yari with my friends and McHale Pack. Thanks a lot, Ben" (click image for blow-up)