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Ultra-Sil Pack Liner


Ultra-Sil Pack Liner

$39.95 $29.96
Award-winning liner keeps the contents of your pack dry + View tech specs
  • Size
  • ColorGreen

PACK SIZE: 70L - up to 4300 cu in

WEIGHT: 3.9 oz | 110 g

WATERPOOF: Waterproof durable roll-top closure with Velcro

SHAPE: Tapered with oval base for easy packing | stowing in your backpack

Shipping & Returns

Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.

2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).

All orders are eligible for fast and easy returns within 60 days of purchase.

For more details, please check out our Help Center

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Ultra Sil Backpack Liner _ dry bag _ green
Ultra-Sil Pack Liner
$39.95 $29.96


The Ultra-Sil Pack Liner won the prestigious Backpacker Editors' Choice award in 2006 and this award winner is an excellent solution for keeping contents of your pack dry. It's made of 30D Ultra-Sil CORDURA® brand fabric, making it super lightweight and is an oval shape to fit inside packs easier. The extra wide opening roll-top closure folds in three before being rolled and sealed with the low profile buckles. We've used bright colors to help with visibility when packing and unpacking, and a 50L, 70L and 90L size range to cover all options and pack sizes.

Tech specs

  • Best Use
    Backpacking, Hiking & Bike Packing
  • Closure
    Waterproof durable roll-top closure with Velcro
  • Material(s)
    Lightweight Ultra-Sil nylon body
  • Shape
    Tapered with oval base for easy packing / stowing in your backpack
  • Waterproof
50 liter70 liter90 liter

Frequently Asked questions

Does it fulfil any other function?

In campsites with bear cables, a pack liner is great as a bag to hold all 'smellables'

Doesn't a trash compactor bag do the same job?

A trash compactor is an OK temporary solution - until it snags. The UltraSil Pack Liner is sealable and much more durable

When would I use a pack liner rather than a pack cover?

In off-trail or rocky environments, a pack cover may become damaged - a pack liner will not.

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