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US edition · USD

Sea to Summit Ultra-SIL X-Small Royal Blue Waterproof Backpack Cover

$36.95 (Price correct as of 11/11/2026 04:28 PST · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Sea to Summit Ultra-SIL X-Small Royal Blue waterproof backpack cover is made from 30D Ultra-Sil Cordura and has seamless construction and keeper straps. It fits packs from 15 to 30 liters, weighs 2 ounces, and packs to 4 x 2.5 inches. An attached mini stuff sack stays connected to the cover.

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SKU: B001PR075K Category:

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Quick Summary

The Sea to Summit Ultra-SIL X-Small Royal Blue Waterproof Backpack Cover is made to cover a backpack during hiking, backpacking, or travel. It fits packs from 15 to 30 liters and has seamless construction, keeper straps, and an attached mini stuff sack.

Key Details

Detail Product information and buyer relevance
Size and fit range X-Small; fits packs from 15 to 30 liters.
Color Royal Blue.
Material and construction Waterproof 30D Ultra-Sil Cordura with seamless construction.
Keeper straps Pull the cover tight across the pack harness.
Stuff sack An included mini stuff sack is attached to the cover.
Packed size and weight Packs down to 4 x 2.5 inches and weighs 2 ounces.

Key Features Explained

The seamless construction is part of the cover’s waterproof design. Keeper straps pull it tight across the pack harness, while the attached stuff sack provides a place to pack the cover without separating the sack from it.

What to Compare Before Buying

  • Pack volume: check that your backpack is within the stated 15 to 30-liter range.
  • Fit around the harness: consider whether the cover’s keeper straps can pull across your pack harness as intended.
  • Packed size and weight: account for the stated 4 x 2.5-inch packed dimensions and 2-ounce weight when planning what to carry.

Compatibility, Size and Fit

The stated fit range is 15 to 30 liters. Confirm your pack’s volume and consider its shape and harness arrangement when checking whether this X-Small cover is the right size.

Before You Decide

Check your pack’s volume, how the keeper straps will sit across its harness, and whether the cover’s packed size and weight suit your packing needs.

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