• Weight 113 grams
  • Size 50-70 litre pack
  • Colours Various colours
  • Cost $59.99

Sea to Summit Ultra-Sil Pack Cover 50-70Litre Pack Cover



Rating: 8.6 / 10
Value for Money 2.1 / 2.5
Versatility 1.8 / 2.5
Weight   2.4 / 2.5
Durability 2.3 / 2.5

Sea to Summit Ultra-Sil Pack Cover 50-70Litre Pack Cover Review

Pack covers are designed to minimise water, and dust, getting into your pack providing an external covering layer to the exposed sides of your pack. Some packs will come with built in pack covers that will store inside a special small pocket, usually on the bottom of the pack that allow you to deploy the cover reasonably quickly when it starts to rain. Out of the eight packs that I currently own only two of them comes with a built in pack cover as I tend to prioritise other features in my purchasing. What this means is that I will carry a standalone pack cover as the weather conditions dictate. Another option you have is to use a pack liner either in conjunction with a pack cover or as a standalone instead of the pack cover. Given the amount of technology that I carry on longer hikes due to my blogging I will use both.

What pack covers don’t do is cover the area of your pack that comes in contact with your back which is a potential weakness in their design, at least with some types of packs. My current pack of choice is the Osprey Exos Pro (55 litres in the large size) and I use the Sea to Summit 50-70 Litre Pack Cover rather than trying to force the smaller 30-50 litre pack cover onto my pack. One of the main reasons that I use this particular pack is that it has a trampoline style back frame that lifts the pack off my back with the only contact points being the shoulders and the hip with good airflow along the centre of the back. This inflow on this style of pack also equates to water flow as well and I have never had water enter though the back of my pack no matter how heavy the rain or the winds driving it. Packs with have a foam style suspension that is in direct contact with your back can end up with moisture soaking in through the pack itself even with a pack cover as the water will run down your back.

These pack covers are pretty simple items and there isn’t much that goes wrong with them. My previous pack cover lasted around 11 years with the only maintenance being a reapplication of the waterproofing with a product like the Nixwax TX. Direct. So if you are the sort of person who does hike in the rain consider a pack cover as an essential piece of equipment.

Sea to Summit Ultra-Sil Pack Cover 50-70Litre Pack Cover blue colour

Sea to Summit 50-70 litre pack cover lime

Sea to Summit 50-70 litre pack cover yellow

Sea to Summit Ultra-Sil Pack Cover 50-70 Litre Pack Cover on the trail. In this image the weather cleared long enough for me to stop for lunch but started back up again shortly after

We Like

  • At 113 grams very lightweight and compact
  • Reduces the entry of fine dust that is so common in central Australia and other arid zones

We Don't Like

  • If I’m being really picky I’d like a larger range of colours (first world problem I know)

Best Uses

For hikes where you expect rain or want protection from fine dust

Buy One

You can purchase the Sea to Summit Ultra-Sil Pack Cover 50-70Litre Pack Cover online from Snowys, or from Wild Earth

Disclosure:  We may earn a small commission, at no additional expense to you, if you click through and make a purchase. Please note that our affiliations do not influence, in any way, the independence of our reviews. If we don’t like a product, you’ll hear about it from us!


AUD $59.99 RRP

Other Versions

  • Sea to Summit Small  Pack Cover (30-50 litre packs)
  • Sea to Summit Large  Pack Cover (70-95 litre packs)


This review was done with product purchased from a retail store by Australian Hiker

Last updated

7 April 2024

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