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  • Osprey Packs - Ultralight Backpack Liners - Poppy Orange
  • Osprey Packs - Ultralight Backpack Liners - Electric Lime
  • Osprey Packs - Ultralight Backpack Liners - Shadow Grey

Current Color

  • Osprey Packs - Ultralight Backpack Liners - Poppy Orange
  • Osprey Packs - Ultralight Backpack Liners - Electric Lime
  • Osprey Packs - Ultralight Backpack Liners - Shadow Grey

Osprey Packs Ultralight Backpack Liners

$35.00 - $45.00

Free 2-Day shipping on orders over $50. Learn More

Select style & size:

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  • Select options
    • Poppy Orange, S
    • Poppy Orange, M
    • Electric Lime, S
    • Electric Lime, M
    • Electric Lime, L
    • Shadow Grey, S
    • Shadow Grey, M
    • Shadow Grey, L

    3 Reviews


    Because soggy sleeping bags suck.

    When you're spending multiple days in the mountains, there's a solid chance you're going to encounter some wet weather at some point. When the rain finally strikes, protect your gear with Osprey Packs Ultralight Pack Liners. These waterproof, ultralight, and ultra-packable liners fit seamlessly into your pack to keep your gear dry, and they pack up super small for easy storage when skies are clear.

    • Seamlessly fits in your pack to protect your gear
    • Waterproof roll-top closure and fully taped seams
    • Rectangular shape for efficient packing
    • Item #OSP009C

    Tech Specs

    40D nylon ripstop
    Pack Size
    [small] 30 - 50L (1831 - 3051cu in), [medium] 50 - 70L (3051 - 4272cu in), [large] 70 - 100L (4272 - 6102cu in)
    Claimed Weight
    [small] 3oz, [medium] 3.8oz, [large] 5.1oz
    Recommended Use
    hiking, backpacking
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?


    • Familiarity: I've put it through the wringer

    So this pack liner is really awesome. I have used them in several different packs. a few things to note
    They are really lightweight, durable, and are fairly airtight.
    Yes, yes, 'technically' they are not waterproof. But yeah... they are. I have dumped them under water a few times while in some canyons in southern Utah, trudged through some snow and sleet during an elk hunt, and turned them into a pillow when I forgot mine on a 30-mile hike around the Tetons.

    I have a medium for my 50L and a large for my 70L pack. They work great as a liner and keeps the pack clean.


    • Familiarity: I've used it several times

    Took this in my pack to Costa Rica last month, it's a must have! Not only was it great to put your suit/ rash guard/ towel in after saturating expeditions like white water rafting or swimming in waterfalls, but just having it in general to separate your dirty/clean clothes on the trip was super handy. It is definitely fully waterproof, and super light weight. I had wet clothes in there for the better part of a day, and it didn't seep through into my dry gear at all. The extra weight is negligible, and is well worth the convenience and comfort it will provide. For reference, I had the small size, and it was more than enough for all my stuff in my 60L pack.

    Bomb Proof!

    • Familiarity: I've put it through the wringer

    I was a bit apprehensive regarding the actual waterproofing ability with this liner. However, It performed in an absolute flawless manner. I used this liner during my tip to the Subway in Zion. Place your gear into the sack, roll the top no less than three times, and you're ready to go.

    Unanswered Question

    What are the actual measured dimensions of the small and medium size pack liners?