Starting at:

$24.95 You save: $17.00 (41%)

Regular : $41.95

Product Highlights:

  • Material: 30D Diamond Ripstop silicone Cordura
  • Seamless construction
  • Mid-back keeper strap
  • Siliconized Nylon stuff sack
  • Lightweight: XS – 2 oz., M – 4 oz.
Sea to Summit : Picture 1 regular $24.95

About Sea to Summit Ultra-Sil Pack Cover

Sea to Summit Ultra-Sil Pack Cover
The Sea to Summit Ultra-Sil Pack Cover is the ultimate pack cover for your backpack. It is made from Siliconized Cordura, which is extremely durable and highly resistant to wear and tear. This product is infused with 30D Diamond Ripstop, making it totally waterproof, providing complete protection for your backpack. Its seamless, continuous construction also helps prevent water from seeping in. Your cover is also equipped with a mid-back keeper strap to secure the weight close to your body. It comes packaged in its own mini siliconized Nylon stuff sack, that is attached to the cover itself. There are four sizes to choose from, for versatile use, from daypacks to large backpacks. So go ahead, have a hassle-free adventure, with the Sea to Summit Ultra-Sil Pack Cover.

Sea to Summit Ultra-Sil Pack Cover Features

  • Made of 30D Diamond Ripstop silicone impregnated Cordura
  • Waterproof finish can't peel or wear off over time
  • Siliconized Cordura is about one third the weight of traditional coated nylon
  • This pack cover uses a no seam construction for complete waterproofness
  • Has a mid-back keeper strap that helps secure it to the pack and keep the sides from catching wind (except size XS)
  • Comes packaged in its own mini siliconized nylon stuff sack that remains attached to the cover so it can't get lost
  • Mid back keeper strap

Sea to Summit Ultra-Sil Pack Cover Specifications

2.3 oz.
X-S: 15L - 30L / 900 cu. in. - 1800 cu. in.,S: 30L - 50L / 1800 cu. in. - 3000 cu. in., M: 50L - 70L / 3000 cu. in.- 4300 cu. in.
X-S: 20 in. x 11 in. x 8 in., S: 23 in. x 13 in. x 9 in., M: 28 in. x 16 in. x 10 in.
Siliconized Cordura
Mid-Back Keeper
Mini Siliconized Nylon
Available in the Following Colors:
Grey, Gold, Green, Pacific Blue, Red, Royal Blue
Available in the Following Sizes:
Medium, Small, X-Small
Weight [with packaging]
X-Small: 0.15 lb,
Small: 0.2 lb,
Medium: 0.25 lb
Mfr #

Ultra-Sil Pack Cover Customer Reviews

Write a Review


by PowerReviews
Sea to Summit Ultra-Sil Pack Cover

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

Displaying review 1

Back to top

(1 of 1 customers found this review helpful)


Sure it costs more, just buy it.

By Old Guy

from Vernal UT

About Me Avid Adventurer

Verified Buyer


  • Improves Backpack Function
  • Versatile
  • Weather Resistant


    Best Uses

    • Large Packs
    • Long haul trips
    • Small Packs
    • Weekend Trips

    Comments about Sea to Summit Ultra-Sil Pack Cover:

    I've had every thing in my pack wet - once. Now every thing important goes into waterproof bags/sacs and the pack gets a waterproof cover. The total protection costs a few ounces - a whole lot lighter than the water your gear will pick up when you get rained on. That doesn't even take comfort into consideration.

    A couple of years ago I went a long backpack trip with my sons. One of them had this pack cover. It performed every bit as well as the rest of our heavier covers. This thing is tough, and so light, and packs so small. I have been jealous ever since. When I got a smaller pack, I had the excuse to get a new pack cover. Any guess what cover I bought to go with it? Ya. This one. In red - so every body behind me won't get lost. Couldn't be happier.

    • What Is Your Gear Style:
    • Minimalist
    • Was this a gift?:
    • No

    Comment on this review

    Displaying review 1

    Back to top


    Questions & Answers Powered by TurnTo®

    Questions about this item:

    Shopper  Why Did You Choose This?
    JWALIN C  I chose this to keep my 52L pack dry.
    Shopper  Why Did You Choose This?
    JWALIN C  I chose this to keep my 52L pack dry.
    Jake B  Is this green forrest green or not?
    Alex S  Sea To Summit labels their bag color as plain green. We do not carry any forest green color.
    Share this item: