The Guyot Designs Backpacker was originally sold by Nalgene as the Nalgene Backpacker, but it appears Guyot Designs is now exclusively selling this beverage container. The 18/10 stainless steel is heavier than that used in other bottles, making the Backpacker more durable but also heavier. Some users and reviewers were happy with this trade-off while others weren't; this depends largely on personal preference. The Guyot Designs Backpacker has a mouth large enough to accommodate ice cubes, though some find the mouthpiece difficult to drink from. The bottle has a screw top with loop attachment. Reviewers appreciate this attached lid, which is an uncommon feature with metal bottles.
The best review of the Guyot Designs Backpacker comes from Good Housekeeping's extensive 32-bottle review. The New York Times also contributes a helpful review. While Outside magazine includes the bottle in its Editor's Choice Awards, there's little detail about why the Backpacker is a favorite. While review sites like Amazon.com are usually helpful for finding user reviews, the Guyot Designs Backpacker doesn't receive enough of them to be especially insightful.
1. Good Housekeeping
Good Housekeeping subjects 32 bottles to stability, leak and drop tests, and a panel of testers evaluates the bottles for comfort, ease of use and appearance. The water bottles that claim to be dishwasher-safe are also run through 28 dishwasher cycles. The Guyot Designs Backpacker doesn't fare will, finishing toward the bottom. Reviewers found the bottle heavy, and difficult to open and drink from. On the other hand, reviewers appreciate the attached lid as well as the wide mouth. This was also the most expensive bottle tested.
Review: Reusable Water Bottles Tested, Editors of Good Housekeeping
2. The New York Times
The New York Times enlists the help of Eric Linxweiler, the president of an outdoor recreation club, to test five water bottles on multiple hikes around Seattle. He details his personal opinion on each bottle but there are no numerical ratings assigned. While other reviewers find the bottle too heavy, Linxweiler says the heavy container is "durable." The mouth is also large enough for pouring or mixing drinks.
Review: Gear Test With Eric Linxweiler, Outdoorsman; Not Simply a Water Bottle, Yishane Lee, Nov. 6, 2008
Outside magazine asks various editors to select their favorite gear of the year in the Editor's Choice awards, and the Guyot Designs Backpacker makes the list for Paddling Gear. There's little information provided as to why this is a favorite, only that it doesn't hold odors or flavors.
Review: The Essentials: Editor's Choice Awards, Editors of Outside magazine, May 2009