The smallest can here, and a generic nozzle
Gas One GAS-4-2 isobutane, 100 g (3.5 oz)
A hundred grams of four-season blend in the smallest canister on this shelf, with a screw-on nozzle the maker describes as generic rather than standard.
On the maker’s own page
A camping fuel blend isobutane fuel canister, 100 g (3.5 oz), two-pack.
Gas One states two pieces of its isobutane fuel; a four-season blend of butane
and propane for consistent cooking pressure; a screw-on style fitting that fits a
large variety of standardized isobutane stoves, burners and other outdoor
equipment; a size of 3.5 × 2.8 inches with a snug plastic cap to keep the can
leak free; and a blend with propane providing higher vapor pressure for colder
conditions. The description adds a 4 oz camping fuel for backpackers and a
generic screw-on type nozzle that will adapt almost all backpacking stoves.
No proportions. No gross weight. No EN 417. No resealable statement.
Two point eight inches across
The narrowest canister on this shelf.
The others are 3, 3, 3 and 3.5 inches across. This shelf’s introduction says to take
the diameter and the height because they decide whether a canister nests inside
your pot and how stable the stove sits.
Two point eight is the difference between a can that drops into a 700 ml titanium
mug and one that does not.
The trade is in the same sentence: a narrower base under a pot of boiling water
is a less stable stove.
Generic, not standard
The maker’s own word.
“The generic screw-on type nozzle will adapt almost all backpacking stoves.”
That describes a fit. Two canisters on this shelf name EN417, which describes a
standard.
This shelf’s introduction: read the stove’s manual and match the wording exactly,
because the wrong valve simply will not go on. “Almost all” is an honest hedge
and it is not a specification.
A hundred grams, and four ounces
Two units, thirteen grams apart.
The title says 100 g (3.5 oz). The description says 4 oz, which is about 113.
Four ounces is the round American way of describing what the trade sells as 100
grams, and the two lines were written in different units. The figure the rest of
this shelf agrees on is 100.
A four-season blend, unquantified
Propane does the work, and the amount is not given.
The listing is right about the mechanism — propane provides the higher vapor
pressure that keeps a canister working in the cold.
Three of the six canisters here publish proportions: 75/25, 75/25 and 72/26/2.
This one publishes the reasoning without the ratio, and this shelf’s introduction
makes the ratio the cold-weather variable.
Gas One’s own instructions on the canister carry the handling. Nothing here
replaces them, and nothing on this page describes any product as safe.
Availability
The American Amazon store was listing it at about $17 at the time of writing.
Every figure here is what Keepa held on the day this page was last revised. Offers and prices shift without warning.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
