Expert Pick #03
Hyperlite Mountain Gear 3400.
Dyneema Composite Fabric construction delivers ultralight durability that refuses to compromise.
The Verdict.
9.0/ 10
Gavler Meta-Score
“The HMG 3400 is the pack that ultralight thru-hikers dream about and traditional backpackers scoff at — until they pick one up. 1.9 pounds for a 55-liter pack is not a typo, and DCF is not a fragile fabric. It's waterproof, abrasion-resistant, and dimensionally stable in ways that nylon can only aspire to. The tradeoff is real: no frame, minimal padding, and a price that makes you wince. But for the hiker who measures pack weight in grams, nothing else exists.”
The Gavler Verdict
Precision Engineering
Dyneema Composite Fabric
DCF is the strongest fiber per weight in existence — waterproof, tear-resistant, and ultraviolet stable without coatings or laminates.
Waterproof Roll-Top
Fully waterproof roll-top closure eliminates the need for a rain cover — one less thing to carry, one less thing to go wrong.
1.9 lb Base Weight
At 1.9 pounds, the 3400 saves 2-3 pounds compared to traditional framed packs — weight savings that compound over every mile.
Technical Specifications
Capacity55 liters (3400 cu in)
Weight1 lb 15.2 oz
Load Range10-25 lbs
MaterialDCF (Dyneema)
ClosureWaterproof roll-top
The Scoreboard
Expert Consensus90%
Community Rating92%
Ultralight community treats it as gospel. Traditional backpackers note the lack of frame support limits comfort above 25 lbs, and the price is steep for a pack without bells and whistles.
Cast Your Vote
Do you think Hyperlite Mountain Gear 3400 deserves the #3 spot in Best Hiking Backpacks?
Best Price Availability.
Prices checked March 2026
Global Critique
“The lightest serious backpacking pack you can buy. DCF is the future of outdoor fabrics.”
Backpacking Light
“Hyperlite's build quality is exceptional. These packs survive thru-hikes that destroy conventional packs.”
The Trek
“No rain cover needed, ever. The peace of mind alone is worth the premium.”
Outdoor Gear Lab
“If you're counting grams, the HMG 3400 is the endgame pack. Nothing else comes close to this weight.”
UL Hiker
More from Best Hiking Backpacks.
See how other top picks compare in this category.
