Coreplex / Product passport

Ultra-Sil Dry Bag

4.8 · 692 reviews via Shopify’s catalogSource: Sea to Summit North America · checked Oct 16, 2026
In stock

The Ultra-Sil Dry Bag won the sought-after Backpacker Editors' Choice award in 2006 and remains the ideal dry bag for backpacking and travel. Made with lightweight, waterproof bluesign® approved 30D Ultra-Sil fabric featuring Cordura® yarns, it's the perfect choice to organize your gear inside your backpack or duffle like a pro. The semi-translucent fabric makes it’s easy to see what’s in each dry bag. Other features include a non-wicking hypalon roll-top closure, an oval base to prevent the dry bag from rolling away on sloped surfaces and taped seams to keep moisture out. An excellent choice for lightweight backpacking, cycle touring and travel. Features Flexible and extremely light bluesign® APPROVED Ultra-Sil 30D Cordura® nylon fabric Find what you need fast through the translucent fabric Oval base prevents rolling and packs efficiently Slippery finish for easy packing and unpacking PFC-free DWR finish Not intended for paddle/watersports use

ColourHigh Rise
Size3L
$22.95
Checkout at Sea to Summit
Official Sea to Summit store. You're buying direct from the brand.
Lowest starting price of the 4 Shopify sellers we checked today.
Size
3L

The Coreplex take

This lightweight 30D Cordura nylon dry bag features an oval base and roll-top closure to keep gear organized while traveling or backpacking.

  • Translucent fabric
  • Patented field repair buckle
  • Oval base design
  • Taped waterproof seams

Rating

4.8 ★

From 692 reviews

Best for

  • lightweight backpacking
  • cycle touring
  • gear organization

Worth knowing

  • Not intended for paddle or watersports use
  • Available in 6 size options
  • Offers 5 color choices
Price & stock
Checked today

The summary is AI-written from the listing and these numbers; confirm details with the seller.

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Details

Key features & specs

  • Bluesign approved Ultra-Sil 30D Cordura nylon fabric. Provides lightweight durability and eco-friendly waterproof protection
  • Translucent semi-translucent fabric. Allows quick visual identification of contents without opening the bag
  • Patented field repair buckle. Ensures a secure, leak-proof seal even in the field
  • Oval base design. Prevents rolling and packs efficiently for travel or thru-hiking
  • Slippery finish. Facilitates easy packing and unpacking
Material
30D Ultra-Sil Cordura nylon
Closure
Hypalon roll-top with patented field repair buckle
Weight
30 g (3L), 32 g (5L), 39 g (8L), 47 g (13L), 58 g (20L), 74 g (35L)
Dimensions
20.7 cmAs stated by Sea to Summit North America
Seams
Taped for waterproofing
Care
Not intended for paddle watersports

Summarized from Shopify’s product catalog. Where Sea to Summit North America states a different figure, we show Sea to Summit North America’s.

Specifications

Colour
High Rise
Size
3L
Size / pack
3L, 5L, 8L, 13L, 20L, 35L

Seller description

Highlights

Best Use Backpacking Dimensions 6 × 7 × 8 in | 14 × 17.1 × 20.7 cm Packed Weight 1.1 oz | 30 g Hydrostatic Head 2000 mm

Features

  • Roll-top closure secured with our patented Field Repair Buckle for a reliable seal
  • Robust and strong bluesign APPROVED Ultra-Sil 30D CORDURA® nylon fabric
  • Find what you need fast through the transcluscent fabric
  • Oval base prevents rolling and packs efficiently
  • Slippery finish for easy packing and unpacking

Product details

Materials

Sack
100% Nylon; Buckles: 100% POM Shape Oval Repair Buckle Size 15 mm Hydrostatic Head 2000 mm 3L 5L 8L 13L 20L 35L Weight 30 g 1.1 oz 32 g 1.1 oz 39 g 1.4 oz 47 g 1.7 oz 58 g 2.0 oz 74 g 2.6 oz Height - Top Rolled 3× 20.7 cm 8.15 in 30.8 cm 12.13 in 36.8 cm 14.49 in 43.3 cm 17.05 in 47.3 cm 18.62 in 56.5 cm 22.24 in Base L × W 14 × 17.1 cm 5.5 × 6.7 in 15 × 17.1 cm 5.9 × 6.7 in 17.2 × 19.1 cm 6.8 × 7.5 in 19.6 × 22 cm 7.7 × 8.7 in 23.6 × 26.9 cm 9.3 × 10.6 in 28.5 × 32.1 cm 11.2 × 12.6 in Imperial Metric

Directions & care

Usage

Internal Storage External Storage Rugged Storage About The Product The Ultra-Sil Dry Bag won the sought-after Backpacker Editors' Choice award in 2006 and remains the ideal dry bag for backpacking and travel.

Made with lightweight, waterproof bluesign approved 30D Ultra-Sil fabric featuring CORDURA® yarns, it's the perfect choice to organize your gear inside your backpack or duffle like a pro.

The semi-translucent fabric makes it’s easy to see what’s in each dry bag.

Other features include a non-wicking hypalon roll-top closure, an oval base to prevent the dry bag from rolling away on sloped surfaces and taped seams to keep moisture out.

An excellent choice for lightweight backpacking, cycle touring and travel.

Product Features Roll-top closure secured with our patented Field Repair Buckle for a reliable seal Robust and strong bluesign APPROVED Ultra-Sil 30D CORDURA® nylon fabric Find what you need fast through the transcluscent fabric Oval base prevents rolling and packs efficiently Slippery finish for easy packing and unpacking Learn more

Seller policies

Shipping & Returns

Free US Shipping on Orders $50+ Easy 60-Day Returns For more details, please check out our Help Center .

FAQs

Is this dry bag suitable for paddle sports?

No. Featherweight fabrics are not appropriate for the sharp or abrasive elements in water sports. We recommend our Lightweight Dry Bags for general paddle use.

Reviews

692 reviews

Reviews on Sea to Summit North America

Review source

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Buying & sources

You check out with Sea to Summit North America. Coreplex doesn’t sell or ship this item.

Sources

Facts come from Sea to Summit North America’s listing and Shopify’s product catalog, as stated by them. Anything Coreplex writes is labeled as ours.

Sea to Summit North America listing ↗ · checked Oct 16, 2026

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