The Osprey Ultralight Raincover in size Medium is designed to protect backpacks ranging from 30 to 50 liters. It is constructed from a 40D nylon ripstop, which balances weight with a functional level of strength. The material uses a dual-protection approach, with a polyurethane coating on the inside for water resistance and a durable water repellent (DWR) finish on the outside to help rain bead off the surface.
This model features a heavy-duty elastic drawcord and a cord-lock tensioning system. This allows the user to adjust the seal around the bag to match how much gear is inside. The integrated stuff sack is a helpful organizational feature that prevents the storage pouch from getting lost. At approximately 80 grams, this cover provides a significant layer of moisture protection without adding much weight to your load.
- 40D ripstop fabric provides a high protection-to-weight ratio.
- The cinch system allows for a custom fit across various pack volumes.
- DWR finish helps prevent the fabric from absorbing water and becoming heavy.
If your 50-liter pack is fully loaded or has bulky gear attached to the outside, the fit can be quite tight. In these situations, moving to a larger size helps ensure the cover wraps far enough around the sides to stay secure. While the 40D fabric is efficient, it is best used for hiking on established trails where it is less likely to encounter sharp thorns or jagged rock faces.
For users who need maximum visibility for roadside safety, the Salzmann High-Visibility Rucksack Cover is a tailored alternative.
Check out our variety of high-performance moisture barriers in the backpack rain covers category.
