Osprey
Ultralight Dry Sack 20 L
Best waterproof organizer for backpackers needing efficient, dry gear storage.
The Osprey Ultralight Dry Sack 20 L is an efficient packing solution designed to keep your gear organized and protected. Its rectangular shape allows for a better fit within your pack or luggage. The sack features a roll-top waterproof closure, waterproof-coated fabric, and sealed seams to ensure your belongings stay dry. It meets IPX5 standards, meaning it is waterproof but not submersible. A D-ring is included for drying or attaching the sack. This product is part of Osprey's commitment to sustainable design, utilizing bluesign® approved and GRS-certified recycled main body fabrics.
$59.99
Owner Satisfaction
4.6
/ 5
Category Rank
338
/ 1600
#338 in Packing Organizers
Price vs Category Average
+27%
Above average
Volume
20
/ L
Who it's for
- Backpackers navigating wet or unpredictable weather conditions
- Minimalist travelers prioritizing low-weight gear setups
- Organized packers maximizing limited luggage space
Who should skip it
- Hikers carrying sharp gear or rugged equipment
- Budget-conscious shoppers seeking affordable storage solutions
- Travelers needing external pockets or modular organization
Performance breakdown
Packing efficiency
Rectangular geometry maximizes internal volume and minimizes wasted pack space.
Weather protection
Reliable IPX5 rating keeps gear dry during heavy rain and splashes.
Material durability
High-tenacity nylon balances lightweight construction with necessary tear resistance.
Ease of access
Roll-top closure provides a secure seal but requires deliberate manual effort.
Sustainability footprint
Bluesign approved and recycled fabrics set a high standard for eco-conscious gear.
Attachment versatility
Integrated D-ring offers a simple solution for drying or external lashing.
Key Specs
Volume
20 L
Dimensions
16.14H x 10.24W x 7.87D in.
Dimensions
41H x 26W x 20D CM
Main Fabric
bluesign® approved 100% recycled 40D high-tenacity nylon
Waterproof Rating
IPX5
Closure Type
Roll-top
Features
- Roll-top waterproof closure
- Waterproof-coated fabric and seams
- Rectangular shape for efficient packing
- IPX5 water-resistant (not submersible)
- D-ring for drying or attachment
- Made with bluesign® approved recycled materials
What customers say
Customers consistently praise the Osprey Ultralight Dry Sack 20 L for its exceptional reliability and impressive lightweight design. Users frequently highlight its robust construction, which instills confidence in keeping gear dry across various outdoor adventures. Its ability to perform its core function flawlessly, combined with its minimal added weight, stands out as a significant advantage. This product is widely regarded as a dependable choice for protecting essentials without adding bulk.
Know before you buy
No, the Ultralight Dry Sack is rated IPX5, which means it is water-resistant and can handle heavy rain or splashes, but it is not designed to be submerged in water.
The rectangular shape is designed to stack more efficiently inside your backpack or luggage, reducing wasted space and preventing the awkward shifting that often occurs with cylindrical dry bags.
The D-ring provides a convenient attachment point, allowing you to clip the sack to the outside of your pack for drying or to secure it inside your luggage so it stays in place.
Yes, it is constructed from 40D high-tenacity nylon. While it is lightweight to keep your pack weight down, the high-tenacity weave provides the necessary durability for standard backpacking and travel needs.
This certification indicates that the materials were manufactured with a focus on environmental safety and resource efficiency, ensuring the production process meets strict standards for chemical safety and sustainability.
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