10 models to compare

What's the lightest dry bag at the size you need?

At 5 L it's Sea to Summit's Lightweight Dry Bag View, at 52 g; ORTLIEB's same-size PD350 weighs 150.3 g, nearly three times as much.

Waterproof ratings describe fabric, not closures.

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With no preferences selected: Expedition DriDuffel Dry Bag 12 L is one option to compare.

No hands-on testingMethod and sources

Expedition DriDuffel Dry Bag 12 L · first with a product link

Model / item: Expedition DriDuffel 12L

Capacity: 12 L.

What to note:

Not listed by the maker: weight, fabric hydrostatic head.

View at NRS

If you choose Up to 34 g for weight, the first option with a product link becomes Lightweight Dry Bag 1.5 L.

10 models compared; 10 have a product-page link.

The picks

5 options to compare

Compare the details that matter to your setup.

An option to compare

Expedition DriDuffel Dry Bag 12 L

Capacity: 12 L.

Model / item: Expedition DriDuffel 12L

What to note

Not listed by the maker: weight, fabric hydrostatic head.

Compare specs: Capacity: 12 L here; 1.5 L on Lightweight Dry Bag 1.5 L.

Capacity: 12 LWeight: Not listed by the makerFabric hydrostatic head: Not listed by the maker

See all 3 specs

Capacity12 L

WeightNot listed by the maker

Fabric hydrostatic headNot listed by the maker

1 of 3 specs available · source checked September 26, 2026 · Source ↗
NRS · Product page checked September 26, 2026

View at NRS Compare

Weight: Up to 34 g

Lightweight Dry Bag 1.5 L

Capacity: 1.5 L.

Model / item: A4001-36

Key details

Weight: 34 g.

What to note

Fabric hydrostatic head: 10,000 mm.

Compare specs: Capacity: 1.5 L here; 5 L on Lightweight Dry Bag View 5 L.

Capacity: 1.5 LWeight: 34 gFabric hydrostatic head: 10,000 mm

See all 3 specs

Capacity1.5 L

Weight34 g

Fabric hydrostatic head10,000 mm

3 of 3 specs available · source checked September 26, 2026 · Source ↗
Sea to Summit · Product page checked September 26, 2026

View at Sea to Summit Compare

Weight: Up to 98 g

Evac Lightweight Compression Dry Bag 5 L

Capacity: 5 L.

Model / item: A4226-30

Key details

Weight: 98 g.

What to note

Fabric hydrostatic head: 10,000 mm.

Compare specs: Capacity: 5 L here; 3 L on Evac Lightweight Dry Bag 3 L.

Capacity: 5 LWeight: 98 gFabric hydrostatic head: 10,000 mm

See all 3 specs

Capacity5 L

Weight98 g

Fabric hydrostatic head10,000 mm

3 of 3 specs available · source checked September 26, 2026 · Source ↗
Sea to Summit · Product page checked September 26, 2026

View at Sea to Summit Compare

Weight: Up to 220 g

Dry-Bag PD350 5 L

Capacity: 5 L.

Model / item: K4052

Key details

Weight: 150.3 g.

What to note

Not listed by the maker: fabric hydrostatic head.

Compare specs: Capacity: 5 L here; 12 L on Expedition DriDuffel Dry Bag 12 L.

Capacity: 5 LWeight: 150.3 g

See all 3 specs

Capacity5 L

Weight150.3 g

Fabric hydrostatic headNot listed by the maker

2 of 3 specs available · source checked September 26, 2026 · Source ↗
ORTLIEB · Product page checked September 26, 2026

View at ORTLIEB Compare

Fabric hydrostatic head: 2,000 mm

Evac Ultralight Compression Dry Bag 3 L

Capacity: 3 L.

Model / item: A4236-11

Key details

Weight: 57 g.

What to note

Fabric hydrostatic head: 2,000 mm.

Compare specs: Capacity: 3 L here; 1.5 L on Lightweight Dry Bag 1.5 L.

Capacity: 3 LWeight: 57 gFabric hydrostatic head: 2,000 mm

See all 3 specs

Capacity3 L

Weight57 g

Fabric hydrostatic head2,000 mm

3 of 3 specs available · source checked September 26, 2026 · Source ↗
Sea to Summit · Product page checked September 26, 2026

View at Sea to Summit Compare

Comparing Expedition DriDuffel Dry Bag 12 L · Lightweight Dry Bag 1.5 L

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The facts that differ

Choose up to three models to compare side by side.

Differences only

0 identical specs shown. Details that do not apply to these models are omitted.

Published specification comparison
Spec	Expedition DriDuffel Dry Bag 12 LModel / item: Expedition DriDuffel 12LNo preferences selected.	Lightweight Dry Bag 1.5 LModel / item: A4001-36No preferences selected.
Capacity	12 L	1.5 L
Weight	Not listed by the maker	34 g
Fabric hydrostatic head	Not listed by the maker	10,000 mm

Expedition DriDuffel Dry Bag 12 L

Model / item: Expedition DriDuffel 12L

No preferences selected.

Capacity: 12 L
Weight: Not listed by the maker
Fabric hydrostatic head: Not listed by the maker

Lightweight Dry Bag 1.5 L

Model / item: A4001-36

No preferences selected.

Capacity: 1.5 L
Weight: 34 g
Fabric hydrostatic head: 10,000 mm

Expedition DriDuffel Dry Bag 12 L

View at NRS

Lightweight Dry Bag 1.5 L

View at Sea to Summit

Compare all 10 models

— = no verified listing yet. The published order is independent of links.

All models and their decision specs
Product	How it compares	Key spec	Compare	Action
Expedition DriDuffel Dry Bag 12 L	Compared with Lightweight Dry Bag 1.5 L: capacity, 12 L vs 1.5 L. Model / item: Expedition DriDuffel 12L	Capacity: 12 L	Compare	View at NRS
Dry-Bag PD350 5 L	Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 5 L vs 12 L. Model / item: K4052	Capacity: 5 L	Compare	View at ORTLIEB
Big River Dry Bag 5 L	Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 5 L vs 12 L. Model / item: A4051-59	Capacity: 5 L	Compare	View at Sea to Summit
Evac Heavy Duty Compression Dry Bag 8 L	Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 8 L vs 12 L. Model / item: A4215-19	Capacity: 8 L	Compare	View at Sea to Summit
Evac Lightweight Compression Dry Bag 5 L	Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 5 L vs 12 L. Model / item: A4226-30	Capacity: 5 L	Compare	View at Sea to Summit
Evac Lightweight Dry Bag 3 L	Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 3 L vs 12 L. Model / item: A4292-18	Capacity: 3 L	Compare	View at Sea to Summit
Evac Ultralight Compression Dry Bag 3 L	Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 3 L vs 12 L. Model / item: A4236-11	Capacity: 3 L	Compare	View at Sea to Summit
Lightweight Dry Bag 1.5 L	Compared with Lightweight Dry Bag View 5 L: capacity, 1.5 L vs 5 L. Model / item: A4001-36	Capacity: 1.5 L	Compare	View at Sea to Summit
Lightweight Dry Bag View 5 L	Compared with Ultra-Sil Dry Bag 3 L: capacity, 5 L vs 3 L. Model / item: A4021-36	Capacity: 5 L	Compare	View at Sea to Summit
Ultra-Sil Dry Bag 3 L	Capacity: 3 L; Weight: 30 g. Model / item: A4241-23	Capacity: 3 L	Compare	View at Sea to Summit

Expedition DriDuffel Dry Bag 12 L

Compared with Lightweight Dry Bag 1.5 L: capacity, 12 L vs 1.5 L.

Model / item: Expedition DriDuffel 12L

Capacity: 12 L

CompareView at NRS

Dry-Bag PD350 5 L

Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 5 L vs 12 L.

Model / item: K4052

Capacity: 5 L

CompareView at ORTLIEB

Big River Dry Bag 5 L

Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 5 L vs 12 L.

Model / item: A4051-59

Capacity: 5 L

CompareView at Sea to Summit

Evac Heavy Duty Compression Dry Bag 8 L

Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 8 L vs 12 L.

Model / item: A4215-19

Capacity: 8 L

CompareView at Sea to Summit

Evac Lightweight Compression Dry Bag 5 L

Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 5 L vs 12 L.

Model / item: A4226-30

Capacity: 5 L

CompareView at Sea to Summit

Evac Lightweight Dry Bag 3 L

Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 3 L vs 12 L.

Model / item: A4292-18

Capacity: 3 L

CompareView at Sea to Summit

Evac Ultralight Compression Dry Bag 3 L

Compared with Expedition DriDuffel Dry Bag 12 L: capacity, 3 L vs 12 L.

Model / item: A4236-11

Capacity: 3 L

CompareView at Sea to Summit

10 catalog models

How the comparison works

Your choices are compared with each model’s product details. A missing or conflicting value stays unknown and cannot satisfy a choice you select. The starting order helps you browse; it does not rate real-world performance.

Source dates appear with each link below. A source date does not confirm today's price or stock.

Finder methodology Report a correction

Sources for all 10 models

Big River Dry Bag 5 L: Source 1 ↗ · September 26, 2026
Dry-Bag PD350 5 L: Source 1 ↗ · September 26, 2026
Evac Heavy Duty Compression Dry Bag 8 L: Source 1 ↗ · September 26, 2026
Evac Lightweight Compression Dry Bag 5 L: Source 1 ↗ · September 26, 2026
Evac Lightweight Dry Bag 3 L: Source 1 ↗ · September 26, 2026
Evac Ultralight Compression Dry Bag 3 L: Source 1 ↗ · September 26, 2026
Expedition DriDuffel Dry Bag 12 L: Source 1 ↗ · September 26, 2026
Lightweight Dry Bag 1.5 L: Source 1 ↗ · September 26, 2026
Lightweight Dry Bag View 5 L: Source 1 ↗ · September 26, 2026
Ultra-Sil Dry Bag 3 L: Source 1 ↗ · September 26, 2026

A fabric water rating does not cover the closure

Sea to Summit specifies a 10,000 mm fabric hydrostatic head for the Big River and a 2,000 mm figure for the Ultra-Sil. Those measurements concern the fabric. They do not describe the closure or say that the finished bag can be submerged.

These dry-bag notes use maker descriptions; no soaking or seam-load trials inform the fabric comparison. Read the exact rolled or zippered model’s closure and immersion instructions before putting water-sensitive equipment inside. A missing fabric rating for NRS or ORTLIEB is an unknown, rather than a lower rating.

Equal bag volume can mean different carry weight

Sea to Summit offers several 5 L bags: the Big River weighs 135 g, the Evac Lightweight Compression weighs 98 g, and the Lightweight View weighs 52 g. ORTLIEB’s PD series at 5 L weighs 150.3 g. If empty weight matters to your packing, volume alone will leave these choices together.

Volumes run from 1.5 to 12 L. The NRS Expedition DriDuffel sits at the larger end, but its current weight is unknown here; a previous version’s weight has not been carried forward. Include closure style and compression design in your choice, rather than assuming equally sized bags pack alike.

Before you buy

Can I hold one of these bags underwater?

Don't assume so. Sea to Summit's rating is a hydrostatic-head figure for the fabric, and it says nothing about the closure that keeps water out, so neither rating makes a bag safe to hold underwater. Unless the maker's own instructions say a closed bag can go under, keep it above the surface.

Why is there no weight for the NRS duffel?

NRS's current Expedition DriDuffel page doesn't give one, and the figure from the older, discontinued version wasn't carried over. It's the only 12 L bag and the only duffel here, so it disappears as soon as you set a weight limit. At 5 L it's Sea to Summit's Lightweight Dry Bag View, at 52 g; ORTLIEB's same-size PD350 weighs 150.3 g, nearly three times as much. At 3 L, ratings split oddly: the 43 g Evac Lightweight claims 10,000 mm, so it suits you if that matters more than the 30 g Ultra-Sil's lighter build at 2,000 mm. Both rate fabric rather than closures.

Is the ORTLIEB weight exact?

Close to it. ORTLIEB gives 5.3 oz, converted here to grams. Its page also carries no fabric rating, so choosing any rating in the finder hides the PD350.