2 Free Issues and 3 Free Gifts!
Full Name:
Address 1:
Address 2:
Zip Code:
Email: (required)
If I like it and decide to continue, I'll pay just $12.00, and receive a full one-year subscription (9 issues in all), a 73% savings off the newsstand price! If for any reason I decide not to continue, I'll write "cancel" on the invoice and owe nothing.
Your subscription includes 3 FREE downloadable booklets.
Or click here to pay now and get 2 extra issues
Offer valid in US only.

Backpacker Magazine –

Zero Impact Challenge Specifications

Zero Impact Challenge Specifications Mountain Smith JanSport Osprey Moutain Smith LL Bean GoLite
Basic Product Specs   Leandro ATMOS 50 - Internal Frame Backpacks Phoenix Alpine Packs Not Branded JAM2 rc
a) Suggested Retail Price   $120.00 $199.00 $289.00 $199.00 $100.00
b) Dimensions   27"x14"x13"   33 x 12.5 x 11.5 (84cm x 32cm x 29cm   23 to 27x14x8 inches
(plus front pocket)
c) Weight   1.15 lbs 3.1lbs 5 lbs 8 oz (2.49 kg) 5 lbs 8 oz
(2.49 kg)
1.14 lbs
d) Volume   3500 cu in 3000 cu in 5675 cu. in., 4211 cu. in. (69 liters) 3500 cu in 3100 cu in
Bill of Materials            
Material Type (i.e., type of plastic, type of metal, etc.)            
Primary fabric   Primary and webbing, binding, velcro, interior lining: 100% recycled 150d polyester ripstop, from PET bottles PET recycled fabric for all body fabrics, stetch woven fabrics, meshes, spacer messes, webbings, binding tapes, all zippers, elastics, cord 100% PET recycled fabric, webbing and binding Eco-intelligent polyester, prepetually recyclable Recycled
Secondary fabric (straps, meshing etc)   Mesh spacer padding, shoulder straps and hip pads: 60% recycled polyester Mesh, strech fabrics, elastics: 60% PET 62% PET recycled Air Mesh 100% post-consumer PET, plant-based foam  
Hardware   PLA plastic PLA 98% + 2% additive, YKK Natulon Zipper 100% PET recycled #5 and #8 zippers; PLA plastic Optimum 5.5 Moso bamboo, PLA buckles, aluminum caribeners POM, Zinc
Source category (i.e., virgin, recycled, reused, etc.)   Recycled Recycled Recycled Recycled Recycled
Descriptions of dies, pigments or coatings   - - - Water-based coating -
g) Frame   Recycled PET based–tried bamboo Recycled Bamboo backpanel Recycled
h) Lifetime warranty   Yes Yes Yes Yes Yes
Other points regarding material   Special eco-friendly foam PET recycled everything / R&D for 2 yrs for Resource / Recycled aluminium frame /      
Recycled   59% 87.10%      
Partially recycled   7%        
Renewable sources   21% 1.40%      
New   13% 11.50%      
End of use considerations   Jansport will recycle        
Other comments     Atmos has been around for 3 years. Researched a lot for ReSource line of products, older Osprey packs with requests for repairs, rather than replacement/      
Business as Usual material   20Denier Nylon with a PU coating
- 70D VXO7 Dimension Polyant Sailcloth (70 Denier Nylon Ripstop + Laminating Film + heavy polyester ripstop + a 30 Denier nylon backing)
- Spacer Mesh
- EVA foam
      GoLite–Fabrics 80% virgin nylon/ 20% virgin polyester. Total fabric weight for a pack this size est. at 2.5 pounds.

Webbing and binding tape 100% virgin nylon. Weight difference negligible

(Velcro/zippers/buckles/hooks) 100% virgin nylon or acetal. Weight difference negligible.

Frame 100% virgin HDPE and foam with non-recycled aluminum stays (2). Weight addition of 1 pounds.


Your rating:
Your Name:


Special sections - Expert handbooks for key trails, techniques and gear

Check out Montana in Warren Miller's Ticket to Ride
Warren Miller athletes charge hard and reflect on Big Sky country, their love for this space and the immense energy allotted to the people who reside in Montana.

Boost Your Apps
Add powerful tools and exclusive maps to your BACKPACKER apps through our partnership with Trimble Outdoors.

Carry the Best Maps
With BACKPACKER PRO Maps, get life-list destinations and local trips on adventure-ready waterproof myTopo paper.

FREE Rocky Mountain Trip Planner
Sign up for a free Rocky Mountain National Park trip planning kit from our sister site

Follow BackpackerMag on Twitter Follow Backpacker on Facebook