Sea to Summit
Sea to Summit Ultra-Sil Pack Cover backpack raincover
Best ultralight rain protection for weight-conscious backpackers and hikers.
The Sea To Summit Ultra-Sil Pack Cover offers a lightweight and compact solution for protecting your backpack from the elements. Constructed from durable, waterproof 30D Ultra-Sil™ fabric made with CORDURA® yarns, this pack cover ensures your gear stays dry. It features a seam-free design for complete waterproofing and packs into its own attached stuff sack, making it easy to carry. A keeper strap helps secure the cover to your pack harness. Available in multiple sizes to fit various backpack volumes.
$22.90
Owner Satisfaction
4.5
/ 5
Category Rank
71
/ 281
#71 in Luggage Covers
Price vs Category Average
-66%
Below average
Material
30
/ D Ultra-Sil™ fabric
Who it's for
- Ultralight backpackers prioritizing minimal pack weight and space
- Hikers trekking through wet, unpredictable weather conditions
- Minimalists needing a secure, streamlined fit for their gear
Who should skip it
- Bushwhackers navigating dense, thorny, or abrasive terrain
- Travelers carrying overstuffed packs or bulky external gear
- Budget-conscious hikers seeking a basic, affordable rain solution
Performance breakdown
Weight Efficiency
Featherlight construction ensures zero impact on your total pack weight.
Waterproof Integrity
Seam-free design provides reliable protection during heavy downpours.
Packability
Stows into a tiny integrated sack for effortless storage.
Fit Versatility
Four distinct size options accommodate a wide range of pack volumes.
Durability
CORDURA yarns offer impressive tear resistance for such thin fabric.
Security
Integrated keeper strap prevents the cover from blowing away in wind.
Key Specs
Material
30D Ultra-Sil™ fabric
Waterproof construction
Includes attached mini siliconized Nylon stuff sack
Keeper strap included
Available in four sizes
X-Small (15-30L), Small (30-50L), Medium (50-70L), Large (70-95L)
Frame type
Frameless
Sternum strap
No
Hip belt
No
Features
- Ultralight
- Waterproof
- Made of 30D Nylon
What customers say
Customers overwhelmingly express high satisfaction with the Sea to Summit Ultra-Sil Pack Cover, consistently praising its exceptional lightweight design and remarkable packability. Many reviewers highlight its ability to compress into an incredibly small integrated stuff sack, making it an indispensable item for backpackers, hikers, and travelers who prioritize minimizing bulk and weight. The primary function of keeping gear dry is met with resounding success; users frequently report their backpacks and contents remaining completely dry even during prolonged downpours and challenging weather conditions, attributing this to the high-quality Ultra-Sil fabric and effective DWR coating. The fit is generally considered excellent, with the elasticized drawcord system allowing for a snug and secure attachment to various backpack sizes, preventing wind from catching and dislodging the cover. While the Ultra-Sil material is celebrated for its lightness, a small segment of users, particularly those subjecting it to extremely abrasive environments, occasionally raise minor concerns about its long-term durability compared to heavier, more robust materials. However, for its intended purpose as a lightweight, emergency, or regular rain cover, its performance is consistently lauded. The convenience of its quick deployment and ease of packing away are also frequently mentioned positives. Overall, the sentiment points to a highly effective, well-designed product that delivers precisely on its promises, making it a highly recommended investment for anyone needing reliable rain protection without adding significant weight or space to their pack.
Know before you buy
Select your size based on the liter capacity of your pack. The X-Small fits 15-30L, Small fits 30-50L, Medium fits 50-70L, and Large fits 70-95L. If your pack is at the upper limit of a size range and is heavily loaded, it is usually safer to size up for full coverage.
Yes, the cover includes a dedicated keeper strap that secures it to your pack's harness. This prevents the cover from blowing off or shifting during high winds or while you are moving through brush.
The cover is made from 30D Ultra-Sil CORDURA nylon, which is surprisingly tough for its ultralight weight. While it is highly resistant to rain and light abrasion, it is not puncture-proof against sharp rocks or heavy thorns.
It is extremely compact. The cover packs down into its own attached mini stuff sack, which is small enough to tuck into a hip belt pocket or the side of your pack until you need it.
The cover is designed to wrap around the exterior of your pack, so you will need to partially remove or lift the cover to access the main compartment zippers. It is best suited for keeping your gear dry while on the move rather than for frequent access.
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