What's the Lightest Rain Jacket for Backpacking in 2026?

The Zpacks Ventum Wind Shell Jacket is the lightest on the shelf at 55 g (1.9 oz), against a six-model median weight of 222 g (7.8 oz) and a median price of $127. It sits under the median price too, at $120, but it costs more per ounce than nearly everything heavier — $61.83 an ounce, well above the shelf's $34.44-an-ounce median. Going lighter here means paying more for each ounce shed, not less, and the reader has to decide whether that trade is worth it before opening a tab.

Two more models sit close to the top of the shelf on weight: the Zpacks Women's Vertice Rain Jacket at 144 g (5.1 oz) and $299, and the Zpacks Men's Vertice Rain Jacket at 152 g (5.4 oz), also $299. Both cost real money to shave weight against the median — $62.34 and $69.46 per ounce saved, respectively.

The rest of the shelf trades the other way. The Marmot PreCip Eco Rain Jacket, the Frogg Toggs Ultra-Lite2 Waterproof Rain Suit, and the Columbia Watertight II Rain Jacket all weigh more than the median and cost far less per ounce. The spread from lightest to heaviest on this shelf runs 285 g (10.1 oz).

The picks, with their figures

1. Lightest overall

   Zpacks Ventum Wind Shell Jacket

   1.9 oz · #1 of 6 · lighter than 100% of the shelf · $119.95 · $61.83/oz

   At 55 g (1.9 oz) the Zpacks Ventum Wind Shell Jacket is lighter than 100% of the shelf, and at $120 it sits below the $127 median price. Its $61.83-an-ounce rate is the highest on the shelf — the cost of being the only model under 100 g.

   • Check current price at Zpacks

2. Lowest cost per ounce saved

   Zpacks Women's Vertice Rain Jacket

   5.1 oz · #2 of 6 · lighter than 80% of the shelf · $299.00 · $58.86/oz

   The Zpacks Women's Vertice Rain Jacket weighs 144 g (5.1 oz) and costs $299, working out to $62.34 per ounce saved against the median — the lower of the two per-ounce-saved figures on the shelf. It is lighter than 80% of the shelf, giving up only the top spot to the Zpacks Ventum Wind Shell Jacket.

   • Check current price at Zpacks

3. Men's-labeled equivalent, a step heavier

   Zpacks Men's Vertice Rain Jacket

   5.4 oz · #3 of 6 · lighter than 60% of the shelf · $299.00 · $55.77/oz

   The Zpacks Men's Vertice Rain Jacket weighs 152 g (5.4 oz), a rank heavier than the Women's Vertice at 144 g (5.1 oz), at the same $299 price. Its cost per ounce saved against the median runs $69.46, higher than the Women's Vertice's $62.34.

   • Check current price at Zpacks

4. Lower price per ounce than the Vertice jackets

   Marmot PreCip Eco Rain Jacket

   10.3 oz · #4 of 6 · lighter than 40% of the shelf · $135.00 · $13.11/oz

   The Marmot PreCip Eco Rain Jacket weighs 292 g (10.3 oz) and costs $135, working out to $13.11 an ounce — far below the $55.77 to $61.83 an ounce the three lighter models on this shelf charge. It is lighter than 40% of the shelf.

   • Check current price at Amazon

5. Cheapest on the shelf

   Frogg Toggs Ultra-Lite2 Waterproof Rain Suit

   11.3 oz · #5 of 6 · lighter than 20% of the shelf · $22.74 · $2.01/oz

   At $23, the Frogg Toggs Ultra-Lite2 Waterproof Rain Suit is the cheapest price with a listing on this shelf, and at $2.01 an ounce it is also the lowest cost per ounce of any model here. It weighs 320 g (11.3 oz), lighter than only 20% of the shelf.

   • Check current price at Amazon

How to Read This Shelf

The median on this shelf is 222 g (7.8 oz) and $127; half the six models weigh less than that, half weigh more. Each model's 'lighter than' figure states the share of the other models on the shelf it weighs less than — the Zpacks Ventum Wind Shell Jacket is lighter than 100% of the shelf, meaning it weighs less than every other model listed, while the Columbia Watertight II Rain Jacket is lighter than 0% of the shelf, meaning nothing here weighs more.

The full spread from lightest to heaviest is 285 g (10.1 oz) — the distance between the Zpacks Ventum Wind Shell Jacket at 55 g (1.9 oz) and the Columbia Watertight II Rain Jacket at 340 g (12.0 oz). That is a wide range for one category. A reader comparing two jackets a rank or two apart should read both the gram figure and the dollar figure together before assuming lighter automatically means better for the trip.

The Weight-for-Money Trade

Under $150, the lightest available model is the Zpacks Ventum Wind Shell Jacket at 55 g (1.9 oz) and $120 — nothing lighter exists on this shelf at any price. Its price per ounce, $61.83, is the highest of the six models, which is the usual arithmetic of the lightest gear on a shelf: the last ounces cost the most.

Move up in price and the per-ounce cost keeps climbing before it falls. The Zpacks Women's Vertice Rain Jacket runs $58.86 an ounce at $299, and the Zpacks Men's Vertice Rain Jacket runs $55.77 an ounce, also at $299. Only past that point does price per ounce drop hard: the Marmot PreCip Eco Rain Jacket costs $13.11 an ounce at $135, the Columbia Watertight II Rain Jacket costs $5.84 an ounce at $70, and the Frogg Toggs Ultra-Lite2 Waterproof Rain Suit costs $2.01 an ounce at $23, the cheapest price on the shelf. Past that range of weights, the money stops buying grams and starts buying very little; the three heaviest models compete on price, not weight.

The Middle of the Shelf

The median weight, 222 g (7.8 oz), falls between the Zpacks Men's Vertice Rain Jacket at 152 g (5.4 oz) and the Marmot PreCip Eco Rain Jacket at 292 g (10.3 oz) — no model on the shelf sits exactly at the median. Moving one rank down from the Men's Vertice to the Marmot PreCip Eco means weight rises from 152 g (5.4 oz) to 292 g (10.3 oz) while price falls from $299 to $135.

One rank down from the Marmot PreCip Eco is the Frogg Toggs Ultra-Lite2 Waterproof Rain Suit, where weight rises from 292 g (10.3 oz) to 320 g (11.3 oz) while price falls from $135 to $23. The two Vertice jackets sit closest together of any pair on the shelf: the Zpacks Women's Vertice Rain Jacket at 144 g (5.1 oz) and the Zpacks Men's Vertice Rain Jacket at 152 g (5.4 oz), both priced at $299 — a rank apart in weight with no difference in price at all.

Who Should Not Buy the Lightest

The spine records what a maker publishes for weight and what a retailer lists for price. It does not say how a jacket performs in sustained rain, how long it holds up to repeated use, or how it fits a particular body — none of that is on a spec sheet, and none of it is claimed here. A reader deciding between the Zpacks Ventum Wind Shell Jacket at 55 g (1.9 oz) and $120 and something roughly six times heavier is deciding on weight and price alone.

Anyone who needs a wide margin for extended exposure to weather, who values a lower price per ounce over the lowest raw weight, or who is unsure whether a lighter build will hold up to their pace and terrain should weigh the $13.11-an-ounce Marmot PreCip Eco Rain Jacket or the $2.01-an-ounce Frogg Toggs Ultra-Lite2 Waterproof Rain Suit against the $61.83-an-ounce Zpacks Ventum Wind Shell Jacket on more than the scale. The numbers on this page answer how light and how much. They do not answer how a jacket holds up on day four.

Every model on this shelf, lightest first

6 ultralight rain jackets for backpacking. Median 7.8 oz, median price $127.48, median $34.44 per ounce.

The whole category, every model placed: the rain & wind shells measured.

What we did not measure

Waterproof rating and seam construction: the spine records weight and price, not hydrostatic head or whether seams are taped, so how well a shell actually keeps rain out is not something these numbers show.

Wind resistance and breathability: a wind shell and a rain jacket manage moving air and body heat differently, and no weight figure captures that difference.

Durability and abrasion resistance: ounces don't say how a fabric holds up against pack straps, brush, or repeated packing over a season.

Fit across brands: the men's and women's Vertice jackets on this shelf carry the same price but different published weights, and sizing runs differently enough between makers that weight alone won't predict fit.

Hood and cuff design: how a hood moves with the head, or how a cuff seals at the wrist, isn't captured by a weight or a price figure.

Questions people ask

Which model is the lightest on this shelf?

The Zpacks Ventum Wind Shell Jacket, at 55 g (1.9 oz), lighter than 100% of the shelf and priced at $120.

Which model is cheapest?

The Frogg Toggs Ultra-Lite2 Waterproof Rain Suit, at $23, the cheapest price with a listing on this shelf. It weighs 320 g (11.3 oz).

Does the lightest jacket also have the best price per ounce?

No. The Zpacks Ventum Wind Shell Jacket costs $61.83 an ounce, while the Marmot PreCip Eco Rain Jacket costs $13.11 an ounce, the Columbia Watertight II Rain Jacket costs $5.84 an ounce, and the Frogg Toggs Ultra-Lite2 Waterproof Rain Suit costs $2.01 an ounce — all lower.

What's the lightest option under $150?

The Zpacks Ventum Wind Shell Jacket, at 55 g (1.9 oz) and $120, is the lightest model on the shelf priced under $150.

What's the difference between the Men's and Women's Vertice jackets?

Both are priced at $299. The Zpacks Women's Vertice Rain Jacket weighs 144 g (5.1 oz) and is lighter than 80% of the shelf; the Zpacks Men's Vertice Rain Jacket weighs 152 g (5.4 oz) and is lighter than 60% of the shelf.

Should I buy the lightest jacket for a long trip?

The spine only records weight and price, not how a jacket holds up to weather or wear over a long trip — that's not an attribute this register carries. Decide using the figures here plus judgment about durability and fit, which the numbers can't supply.