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GSI
GSI Infinity Backpacker Mug

GSI Infinity Backpacker Mug

Best price now

$11.99at AmazonObserved at 5:18 PM

Compared across 5 stores. Prices are checked against each store and labelled with when.

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Our take on the GSI Infinity Backpacker Mug

The GSI Infinity Backpacker Mug is a 17.5 oz collapsible-handle mug built for backpacking and travel. It weighs 3.5 oz, has a spill-resistant lid with a sip-through spout and flip cover, and comes with a foam sleeve to hold temperature. It is BPA-free and backed by a lifetime warranty against defects. At $11.99 at Amazon as of November 4, 2026, it sits at the low end of its recent price range across the 5 stores that carry it new.

Best for
Backpackers counting ounces
Campers who want a lid and handle
Travelers packing light
Coffee drinkers on the trail
Pros
  • Very light at 3.5 oz
  • 17.5 oz capacity holds a full mug of coffee
  • Collapsible webbing handle packs flat
  • Spill-resistant lid with sip spout and flip cover
  • BPA-free and backed by a lifetime warranty
Cons
  • Foam sleeve insulates weakly; drinks cool faster than in a vacuum mug
  • Not dishwasher safe
  • Not compatible with a camp stove
  • Cloth-wrapped foam sleeve can stain and wear

GSI Infinity Backpacker Mug prices at every store

  • GSI OutdoorsNew

    In stock

    $14.95Observed at 5:18 PM
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  • Waypoint OutfittersNew

    In stock

    $14.95+ $6.99 shippingObserved at 5:18 PM
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  • Fitzharris Ski Bike and OutdoorNew

    In stock

    $12.95+ $10.65 shippingObserved at 5:18 PM
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  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $11.99Observed at 5:18 PM
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  • eBayNew

    Availability unknownSold by jumboclub (97.7% positive, 43 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $12.95Free shippingVerified
    Visit store
  • eBayPre-owned

    Availability unknownSold by southernsellers251 (100% positive, 478 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $12.00+ $8.24 shippingVerified
    Visit store

Also available at

  • eBayCheck price at eBay

GSI Infinity Backpacker Mug price history

Lowest price we've seen: $11.99 on Nov 4 at Amazon. Tracked across 5 stores since Nov 4.

What reviewers say

Owners of the Infinity mug line generally like how little it weighs and how it nests into a pack. The common complaint is heat loss: the sleeve slows cooling but does not keep coffee hot like a double-wall mug.

Pros
  • Low weight for the capacity
  • Handle and lid make it usable on the move
  • Packs down small
Cons
  • Drinks go cold fairly quickly
  • Sleeve gets dirty and is hand-wash only

Specifications

Weight
3.5 oz
Dishwasher Safe
Not recommended
Type
Mug
Pieces Included
1
Included Items
Insulated sleeve
Handle Type
Collapsible webbing handle
Lid Type
Spill-resistant lid with a sip-through spout and flip cover
Cookware Capacity
17.5 oz.
Temperature Resistance
Keeps liquids hot or cold
Free Of
BPA-free, Non-leaching
Compatible With
Not compatible with a camp stove
Sustainable Certification
BPA Free
Texture
Foam sleeve, Cloth-wrapped
Color
Red, Black, Blue, Green
Style
Modern
Durability
Lifetime Warranty against material and workmanship defects
Age Range
Adult
Use
Outdoor use
Typical Users
Travelers, Backpacker, Campers
Height
4.6 in
Size
No information
Assembled Dimensions
4.6"H x 4"W x 3.6"D

Questions and answers

Is the GSI Infinity Backpacker Mug worth it?
At $11.99 it is a cheap, light mug for backpacking. If you need coffee to stay hot for hours, a vacuum-insulated mug is the better buy.
How long does it keep drinks hot?
The foam sleeve slows heat loss but does not seal in heat like a vacuum wall. Expect a hot drink to stay warm for a short while, not hours.
Is it dishwasher safe?
No. GSI does not recommend dishwashing; hand wash the mug and sleeve.
Can I use it on a camp stove?
No. It is not compatible with a camp stove and should not be placed over a flame.
What comes in the box?
One mug with its spill-resistant lid and the insulated foam sleeve.
When is it cheapest?
The best new price found is $11.99 at Amazon as of November 4, 2026. Watch for outdoor-gear sales in spring and around major shopping events.
Where is the GSI Infinity Backpacker Mug cheapest?
At Amazon, for $11.99, as of our latest check.
Where can I buy the GSI Infinity Backpacker Mug?
5 stores we checked sell it, including Fitzharris Ski Bike and Outdoor, GSI Outdoors, Waypoint Outfitters, Amazon, eBay.

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