Sea to Summit Ultra-Sil Pack Liner
Best reliable waterproofing for outdoor adventurers.
A lightweight, waterproof barrier that keeps essential gear dry inside any backpack. It offers a simple, effective way to protect sleeping bags and clothing from moisture without adding significant weight to a kit.
$34.95
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Who it's for
- Backpackers prioritizing minimal weight for long treks
- Outdoor enthusiasts needing reliable gear protection in wet conditions
- Minimalist travelers and hikers with limited pack space
Who should skip it
- Users who frequently carry sharp items or abuse their gear
- Budget-conscious shoppers seeking a more affordable waterproofing option
- Kayakers or rafters needing fully submersible, external dry storage
Performance breakdown
Weight Efficiency
Featherlight construction keeps your base weight impressively low on long treks.
Waterproofing Reliability
Taped seams and a secure roll-top keep gear bone-dry in storms.
Packing Ease
The slippery fabric finish makes sliding gear inside a seamless experience.
Internal Space Optimization
Oval base design eliminates dead space inside your backpack's main compartment.
Durability
Cordura fabric handles abrasion well, though ultralight materials require careful handling.
Closure Security
Velcro and stiffener combo provides a reassuringly tight, reliable seal.
Key Specs
Capacity
50 Liters
Material
Cordura
Weight
2.6 ounces
Waterproof
Yes
Closure Type
Roll Top
Shape
Oval base
Uncompressed Height
21 inches
Seam Construction
Taped Seams
Intended Use
Gear
Number of Compression Straps
0
Know before you buy
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