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GSI Outdoors Ultralight Java Drip
#2 — Best Ultralight Brewer

GSI Outdoors Ultralight Java Drip Review (2026)

Four tenths of an ounce of nylon mesh that makes real coffee

★★★★★
8.5/10
Reviewed by William • Updated August 2026 $10

A nylon mesh cone on a wire frame that folds flat and weighs 0.4oz. That is the whole product, and for backpackers who want real coffee rather than instant, nothing else comes close on weight. The mesh filter means an oilier, heavier-bodied cup than paper and some fines in the bottom, which most people accept happily at this weight. The real drawback is cleanup: wet grounds sit in the mesh and must be knocked out and packed, which is messier than an AeroPress puck.

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$10 retail
TrailCraft Score

What Works

  • 0.4oz — essentially free pack weight
  • $10
  • Folds completely flat
  • No paper filters to carry or run out of
  • Fits most camp mugs

Limitations

  • Mesh filter lets fines through
  • Wet grounds are messy to remove and pack out
  • Slower drawdown than a paper cone
  • Frame can bend if crushed in a pack

At a Glance

TypeCollapsible mesh pour-over
Capacity1 cup
Weight0.4oz / 11g
FilterPermanent nylon mesh
Packed sizeFlat, credit card footprint
Brew time2-3 minutes
WarrantyGSI limited

Score Breakdown

Value for Money
9.8
Cup Quality
7.6
Packability
9.9
Ease of Cleanup
6.8
Durability
7.6

What Sets It Apart

This is the item that ends the instant-versus-real-coffee argument for weight-conscious hikers, because at 0.4oz there is no weight argument left. The cup is not as clean as paper-filtered pour-over, but it is unmistakably real coffee. Carry a dedicated zip bag for the wet grounds and the cleanup problem mostly goes away.

Four tenths of an ounce of nylon mesh that makes real coffee

Who This Is For

Ultralight backpackers, thru-hikers who refuse instant coffee, and anyone who wants a real-coffee option at no meaningful weight cost.

Note: Prices are current as of August 2026. Some links are affiliate links.

Also Consider

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Common Questions

How do I deal with the wet grounds?
Knock them into a dedicated zip bag with your other food waste and pack them out. Never bury or scatter coffee grounds at a backcountry site.
Does the mesh clog over time?
It does accumulate oils. Rinse thoroughly at home and periodically soak it in a coffee-equipment cleaner to restore flow.