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Orders over $99 Ship Free + Free In-Store Pickup

Ultra-Sil Pack Cover

Color: Lime

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Ultralight cover protects pack from the weather

The Ultra-Sil Pack Cover ends the debate about whether you should carry one or not. It's a tiny and compelling solution and the medium size weighs less than four ounces. Plus it packs into its own small stuff sack - why wouldn't you carry one?

*RECOMMENDATION: If you stow any gear externally on your pack, we would recommend buying a Pack Cover a size larger than normal.


  • Made of 30D Ultra-Sil™ fabric constructed from CORDURA® yarns for durable, waterproof performance.
  • This pack cover does not use seam construction to ensure that it is completely waterproof
  • Packaged in its own mini siliconized Nylon stuff sack that remains attached to the cover so it can't get lost
  • Keeper strap (sizes S-L) pulls the pack cover tight across the pack harness
  • Sold in four sizes to fit daypacks up to large backpacks


  • X-Small: Fits a 15 to 30-liter pack
  • Small: Fits a 30 to 50-liter pack
  • Medium: Fits a 50 to 70-liter pack
  • Large: Fits a 70 to 95-liter pack


  • BEST USE  Ultralight Backpacking
  • MATERIAL(S)30 denier Ultra-Sil™ nylon
PACK SIZE 15-30L 30-50L 50-70L 70-95L
PACKED SIZE 4 x 2.5 in 4.25 x 2.75 in 4.25 x 3 in 4.75 x 3 in
WEIGHT 2 oz 3 oz 4 oz 4.6 oz


  • Aren't most backpacks waterproof without a cover?
    No. Water will enter through seams and zippers (especially in really wet parts of the world)
  • Why choose the Ultra-Sil Pack Cover over the Nylon version?
    The Ultra-Sil Pack cover is slightly lighter and has a smaller packed volume - it is more suitable for weight-conscious backpackers
  • Will a pack cover make my pack completely waterproof?
    In most cases, waterproof enough - wind-driven rain can still enter through the space between your back and the harness