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Ultra-Sil Pack Cover

Sea to Summit

Ultra-Sil Pack Cover


Online inventory may not reflect in-store availability.

Ultra-Sil Pack Cover is available to buy in increments of 1

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 a mere 4 ounces. Packs into its own small stuff sack - why wouldn't you carry one?


  • 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
  • Sea To Summit Pro Tip - If you stow any gear externally on your pack, we would recommend buying an Ultra-Sil Pack Cover a size larger than normal.

Materials: 30D Ultra-Sil Cordura

Manufacturer Warranty: Lifetime against defects in materials and workmanship


Sea To Summit Ultra-Sil Pack Covers
Pack Cover SizeBackpack FitPacked Cover SizeClaimed Weight
(900-1800 cu in)
4" x 2.5"
(10 x 6 cm)
2 oz
(57 g)
S 30-50L
(1800-3000 cu in)
4.25" x 2.75"
(10.5 x 7 cm)
3 oz
(85 g)
M 50-70L
(3000-4300 cu in)
4.25" x 3"
(10.5 x 7.5 cm)
4 oz
(113 g)
L 70-95L
(4300-5800 cu in)
4.75" x 3"
(12 x 7.5 cm)
5 oz
(130 g)