GSI Outdoors Infinity Backpacker Mug I Lightweight, BPA-Free Coffee Cup for Travel, Camping Gear, Backpacking and Outdoors - 17…
GSI Outdoors
Best for
Best overall
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 3 trusted sources
Current price
$11.96
Updated May 18, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the GSI Infinity Backpacker Mug is the closest thing this category has to a default recommendation. gearjunkie.com calls it "cheap, effective, and light" after multi-year use, ultralightnerd.com frames it as their favorite ultralight mug despite minor flaws, and popupbackpacker.com's five-year follow-up reports it has held up to ongoing trail abuse. The 17 oz capacity, internal measurement markings, and removable insulating sleeve come up repeatedly as the reasons it earns shelf space.
What reviewers liked
- Independent specialist sites (gearjunkie.com, ultralightnerd.com, popupbackpacker.com) report multi-year durability
- Very light (around 3.5 oz) and inexpensive — recommended across high-trust r/Ultralight threads
- 17 oz capacity with internal measurement markings useful for rehydrating meals
- Removable insulating sleeve improves grip with hot drinks
Where it falls short
- Insulation described as mediocre by multiple reviewers — not in the league of vacuum-insulated stainless
- YouTube and Reddit commenters report the handle is awkward enough that some cut it off
- Plastic construction can't go over a flame, unlike titanium alternatives
- threepointsofthecompass.com flags the tall profile as less pack-friendly than lower mugs
Across the reviewers we read, the GSI Infinity Backpacker Mug is the closest thing this category has to a default recommendation. gearjunkie.com calls it "cheap, effective, and light" after multi-year use, ultralightnerd.com frames it as their favorite ultralight mug despite minor flaws, and popupbackpacker.com's five-year follow-up reports it has held up to ongoing trail abuse. The 17 oz capacity, internal measurement markings, and removable insulating sleeve come up repeatedly as the reasons it earns shelf space.
Specialist-community signal is consistent: posters in r/Ultralight, r/WildernessBackpacking, and r/backpacking all volunteer it unprompted as a long-standing pick at roughly 3.5 oz and around ten dollars. The disagreements are honest and worth flagging — threepointsofthecompass.com prefers a lower-profile mug, and a YouTube reviewer in the signals notes the handle is essentially useless and removed it. Insulation is described as adequate rather than impressive; this is a polypropylene mug with a sleeve, not a vacuum-insulated tumbler.
For most campers who want one mug that's light enough for backpacking, cheap enough to not worry about, and big enough for real coffee, the consensus across the reviewers we read is that this is the safe pick.
- Infinity Backpacker Mug Red
- We believe food brings us together, sustains our explorations, and, mysteriously, always tastes better when cooked and eaten outside
- We’re committed to responsible manufacturing, stewardship of our environment, and design rooted in innovation, efficiency, and durability
I use a GSI Outdoors Infinity Backpacker Mug. Costs about $10 and weighs 3.5oz. Been pretty happy with it. Human_G_Gnome. • 7y ago.
Many users praise its durability, lightweight design, and effective insulation. While some users have mentioned the mug occasionally slipping ...
Trust tier reflects our editorial assessment of the source, not the individual quote. Hover for the rationale. See how we tier sources →
“GSI Infinity Backpacker Mug” · REVIEW and COFFEE Test
If the consensus convinced you
Check current price on Amazon
Pricing and availability change frequently. Tap through to confirm before buying.