What's the Lightest Ultralight Backpack to Buy in 2026?

The lightest ultralight backpack on this shelf is the Hyperlite Mountain Gear Contour 35 at 459 g (16.2 oz, 1.01 lb), lighter than 100% of the shelf. The shelf's median sits at 885 g (31.2 oz, 1.95 lb) and $300, a weight matched exactly by the Gossamer Gear Gorilla 50. Going lighter than that median costs money: the Contour 35 runs $350, or $3.33 per ounce saved against the median, and the Hyperlite Mountain Gear Waypoint 35 at 666 g (23.5 oz, 1.47 lb) costs $10.36 per ounce saved. The spread across the shelf runs 633 g (22.3 oz, 1.40 lb) from lightest to heaviest.

The picks, with their figures

1. Lightest overall

   Hyperlite Mountain Gear Contour 35

   1.01 lb · #1 of 7 · lighter than 100% of the shelf · $350.00 · $21.62/oz

   The Contour 35 weighs 459 g (16.2 oz, 1.01 lb), lighter than 100% of the shelf. At $350 it costs $21.62 per ounce, the highest per-ounce price on the list, and $3.33 per ounce saved against the 885 g median weight.

   • Check current price at Hyperlite Mountain Gear

2. Cheapest with a listed price

   Gossamer Gear Vagabond Jet

   1.53 lb · #3 of 7 · lighter than 67% of the shelf · $130.00 · $5.31/oz

   The Vagabond Jet costs $130, the cheapest listed price on the shelf, for 694 g (24.5 oz, 1.53 lb), or $5.31 per ounce. It carries a published 26 L capacity, the only volume figure on this shelf, and ranks lighter than 67% of the shelf.

   • Check current price at Gossamer Gear

3. The median pick

   Gossamer Gear Gorilla 50

   1.95 lb · #4 of 7 · lighter than 50% of the shelf · $275.00 · $8.81/oz

   The Gorilla 50 weighs 885 g (31.2 oz, 1.95 lb), the exact median weight on this shelf, while pricing at $275, below the $300 median price. At $8.81 per ounce it matches the shelf's median price per ounce exactly, and it ranks lighter than 50% of the shelf.

   • Check current price at Gossamer Gear

4. Lighter than median, priced above it

   Hyperlite Mountain Gear Waypoint 35

   1.47 lb · #2 of 7 · lighter than 83% of the shelf · $380.00 · $16.18/oz

   The Waypoint 35 weighs 666 g (23.5 oz, 1.47 lb), lighter than 83% of the shelf, for $380. That premium works out to $10.36 per ounce saved against the median weight, and a per-ounce price of $16.18.

   • Check current price at Hyperlite Mountain Gear

5. Median price, heavier than median weight

   ULA Equipment Circuit SV

   2.34 lb · #6 of 7 · lighter than 17% of the shelf · $299.99 · $8.00/oz

   The Circuit SV weighs 1063 g (37.5 oz, 2.34 lb) for $300, matching the shelf's median price exactly while ranking lighter than only 17% of the shelf. At $8.00 per ounce it prices slightly under the $8.81 median price per ounce despite carrying more weight than the median pack.

   • Check current price at Ula

How to read this shelf

Median weight on this shelf is 885 g (31.2 oz, 1.95 lb), the exact figure carried by the Gossamer Gear Gorilla 50, which also sits at the shelf's midpoint, lighter than 50% of the shelf. Each model's 'lighter than' share places it among these seven ultralight packs specifically, not the full 31-model category RidgeNote tracks; a pack lighter than 100% of the shelf, like the Contour 35, simply beats the other six models on this list.

The spread from lightest to heaviest is 633 g (22.3 oz, 1.40 lb): the Contour 35 at 459 g (16.2 oz, 1.01 lb) against the ULA Equipment Circuit at 1092 g (38.5 oz, 2.41 lb), lighter than 0% of the shelf. That range is the entire menu here. Every other model's weight falls somewhere inside those two endpoints, and the median splits the shelf close to the middle rather than near either edge.

The weight-for-money trade

Under $150, the lightest pack with a listed price is the Gossamer Gear Vagabond Jet at $130, weighing 694 g (24.5 oz, 1.53 lb) for $5.31 per ounce. Raise the ceiling to $350 and the lightest pack on the shelf becomes the Contour 35, weighing 459 g (16.2 oz, 1.01 lb) for $21.62 per ounce. The per-ounce price climbs sharply between those two ceilings, from $5.31 to $21.62, marking where the shelf's money stops buying grams cheaply and starts buying them at a premium.

Price per ounce across the shelf ranges from $5.31 (Vagabond Jet) up to $21.62 (Contour 35), with the median landing at $8.81 per ounce, the same rate posted by the Gorilla 50 itself. The two packs lighter than the median weight, the Contour 35 at $21.62 per ounce and the Waypoint 35 at $16.18 per ounce, both price above that $8.81 median rate. That gap is the shelf's clearest statement of what going lighter than median actually costs per ounce.

The middle of the shelf

One rank lighter than the median sits the Gossamer Gear Vagabond Jet at 694 g (24.5 oz, 1.53 lb) for $130, lighter than 67% of the shelf. One rank heavier than the median sits the Hyperlite Mountain Gear Prism 40 at 981 g (34.6 oz, 2.16 lb) for $450, lighter than 33% of the shelf. The Gorilla 50 itself, the median pack, weighs 885 g (31.2 oz, 1.95 lb) for $275, lighter than 50% of the shelf.

Below the Prism 40, the ULA Equipment Circuit SV weighs 1063 g (37.5 oz, 2.34 lb) for $300, lighter than 17% of the shelf, and the ULA Equipment Circuit closes the list at 1092 g (38.5 oz, 2.41 lb) for $300, lighter than 0% of the shelf. Both ULA packs carry the same $300 price as the shelf's median price, but neither carries the median's weight. A reader anchored to that $300 figure ends up with a heavier pack than the Gorilla 50 gives at $275.

Who should not buy the lightest

The lightest pack on this shelf, the Contour 35 at 459 g (16.2 oz, 1.01 lb), costs $350 and runs $21.62 per ounce, the highest per-ounce price on the list. That number says nothing about how the pack carries a load, how it holds up over months on trail, or whether its capacity fits a given trip's food and water needs. A reader who plans to carry heavy loads, hike long stretches between resupply, or move through rough terrain should weigh those questions alongside the ounces, not instead of them.

The Vagabond Jet is the only model here with a published capacity, 26 L, which sets a rough ceiling on what it can carry regardless of how little it weighs. For every other pack on this shelf, RidgeNote's register does not carry a capacity figure, so a reader choosing by rank alone should confirm capacity and fit against their own trip before letting weight outrank everything else.

Every model on this shelf, lightest first

7 ultralight backpacks. Median 1.95 lb, median price $299.99, median $8.81 per ounce.

The whole category, every model placed: the backpacks measured.

What we did not measure

How each pack carries a loaded weight against the hips and shoulders over miles; the register has no comfort or load-transfer figure.

Durability of fabric and stitching over a season of use; the spec sheet lists no abrasion or failure data.

Weather resistance; the register does not carry a waterproofing or exposure rating for any pack here.

Fit across torso lengths and hip sizes; none of these models list a size range in the figures RidgeNote tracks.

Capacity beyond the one published figure; only the Vagabond Jet lists a volume (26 L), and the rest carry no capacity spec in this register.

Questions people ask

How much should an ultralight backpack weigh?

On this shelf, the median weight is 885 g (31.2 oz, 1.95 lb), carried by the Gossamer Gear Gorilla 50. The lightest is the Contour 35 at 459 g (16.2 oz, 1.01 lb) and the heaviest is the ULA Equipment Circuit at 1092 g (38.5 oz, 2.41 lb), a 633 g (22.3 oz, 1.40 lb) spread between them. Where a reader lands inside that range depends on how much they want to pay per ounce saved.

What size ultralight pack for a thru-hike?

RidgeNote's register only carries a capacity figure for one model on this shelf, the Gossamer Gear Vagabond Jet, listed at 26 L. None of the other six packs here list a volume figure in the specs RidgeNote tracks, so capacity for those models has to be checked against the maker's own listing rather than this register.

How much does an ultralight backpack cost?

Prices on this shelf run from $130 for the Vagabond Jet up to $450 for the Hyperlite Mountain Gear Prism 40, with a median price of $300. The lightest pack, the Contour 35, sits above that median at $350.

What is the lightest ultralight backpack on this shelf?

The Hyperlite Mountain Gear Contour 35, at 459 g (16.2 oz, 1.01 lb), is lighter than 100% of the shelf. It costs $350, or $21.62 per ounce.

Is the lightest pack worth the extra cost?

The figures only show what the ounces cost, not what they are worth to a given hiker. The Contour 35 runs $3.33 per ounce saved against the 885 g median weight, while the Waypoint 35 runs $10.36 per ounce saved for its 666 g (23.5 oz, 1.47 lb) weight; a reader has to decide how much a saved ounce is worth against those two prices.