Osprey Ultralight Dry Pack 20

Osprey Ultralight 20L Dry Stuff Pack User Manual

Model: Ultralight Dry Pack 20

1. Introduction

Thank you for choosing the Osprey Ultralight 20L Dry Stuff Pack. This versatile, lightweight, and waterproof pack is designed for travel, day trips, and any activity where keeping your essentials dry is crucial. Its packable design allows for easy storage when not in use, making it an ideal companion for various adventures.

Osprey Ultralight 20L Dry Stuff Pack in use

Image 1.1: The Osprey Ultralight 20L Dry Stuff Pack worn by a user, showcasing its compact size and fit.

2. Safety Information

  • Not for Submersion: This pack is rated IPX5, meaning it is waterproof against low-pressure water jets. It is not designed for submersion. Do not submerge the pack or its contents in water.
  • Weight Distribution: For comfort and stability, distribute weight evenly within the pack.
  • Sharp Objects: Avoid placing sharp or pointed objects directly against the pack's fabric to prevent punctures. Use a protective sleeve if necessary.
  • Children: Keep plastic packaging away from children to prevent suffocation hazards.

3. Components Overview

Familiarize yourself with the key features of your Dry Stuff Pack:

  • Main Compartment: Features a roll-top closure for waterproof protection.
  • Shoulder Straps: Comfortable mesh straps for breathability.
  • Sternum Strap: Adjustable strap with an integrated whistle for stability and emergencies.
  • Side Stretch Pockets: Ideal for water bottles or quick-access items.
  • Front Zippered Pocket: For small essentials (note: this pocket is not waterproof).
  • Integrated Stuff Sack: The pack self-stows into this internal pocket for compact storage.
Front view of Osprey Ultralight 20L Dry Stuff Pack

Image 3.1: Front view of the pack, showing the main compartment, front pocket, and side pockets.

Back view of Osprey Ultralight 20L Dry Stuff Pack

Image 3.2: Back view of the pack, highlighting the mesh shoulder straps and sternum strap.

4. Setup and First Use

4.1 Unpacking the Pack

  1. Locate the integrated stuff sack, which the pack is stored inside.
  2. Unzip the stuff sack.
  3. Carefully pull the main body of the backpack out of the stuff sack.
  4. Unfurl the pack completely. The stuff sack will remain attached inside the pack and can be used as an internal pocket.
Osprey Ultralight 20L Dry Stuff Pack packed into its pouch

Image 4.1: The pack shown in its self-stowed, compact form.

5. Operating Instructions

5.1 Packing the Main Compartment

  1. Place items you wish to keep dry into the main compartment.
  2. To close, bring the two top edges of the opening together.
  3. Roll the top edges down tightly at least 3 times.
  4. Secure the side buckles to keep the roll-top closure in place. This creates a waterproof seal.
Close-up of the roll-top closure on the Osprey Dry Stuff Pack

Image 5.1: Detail of the roll-top closure mechanism, essential for maintaining waterproofing.

5.2 Using Side Stretch Pockets

The side stretch pockets are designed to hold water bottles, snacks, or other items you need to access quickly. The elasticated opening helps secure items in place.

5.3 Adjusting Fit

  1. Shoulder Straps: Adjust the webbing straps at the bottom of the shoulder straps to raise or lower the pack on your back for a comfortable fit.
  2. Sternum Strap: Slide the sternum strap up or down the shoulder strap webbing to position it comfortably across your chest. Fasten the buckle to secure.
User wearing Osprey Ultralight 20L Dry Stuff Pack, side view

Image 5.2: Side view of the pack on a user, demonstrating how it sits on the back.

User wearing Osprey Ultralight 20L Dry Stuff Pack, back view

Image 5.3: Back view of the pack on a user, showing the shoulder straps and sternum strap in position.

5.4 Official Product Video

Video 5.1: Official overview of Osprey Ultralight Stuff Packs, demonstrating features and use.

6. Maintenance

6.1 Cleaning Instructions

To maintain the integrity and appearance of your pack:

  • Hand Wash Only: Do not machine wash, bleach, iron, or dry clean.
  • Use a mild soap and cool water.
  • Gently scrub soiled areas with a soft brush or cloth.
  • Rinse thoroughly with clean water.
  • Hang to air dry completely in a shaded area, away from direct sunlight or heat.

6.2 Storage

When not in use, ensure the pack is clean and completely dry before storing it in a cool, dry place. You may store it unfolded or packed into its integrated stuff sack.

7. Troubleshooting

  • Leaking: Ensure the roll-top closure is rolled down tightly at least 3 times and the side buckles are securely fastened. Check for any punctures or tears in the fabric.
  • Discomfort: Adjust shoulder straps and sternum strap to achieve an even weight distribution and comfortable fit.
  • Stuck Zipper: If a zipper is stiff, try applying a small amount of zipper lubricant or graphite from a pencil.

8. Specifications

Model NameUltralight Dry Pack 20
Capacity20 Liters
Dimensions (H x W x D)17.7" x 9.8" x 8.3" (45 x 25 x 21 cm)
Weight6.88 ounces (195 g)
Material100% Recycled Nylon
Water ResistanceIPX5 (Waterproof, Non-Submersible)
Number of Pockets3 (Main, Front Zippered, 2 Side Stretch)

9. Warranty and Support

9.1 Osprey All Mighty Guarantee

Osprey stands behind the quality of its products. The Osprey All Mighty Guarantee covers any reason, any product, any era. If your product is damaged, Osprey will repair or replace it at no cost. For more details and to initiate a claim, please visit the official Osprey website.

9.2 Customer Support

For further assistance, questions, or concerns, please contact Osprey customer support through their official website or the contact information provided with your purchase.

© 2026 Osprey. All rights reserved.

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