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Reviews > Stuff Sacks > Dry Bags > SealLine Storm Sack > Wayne Merry > Initial Report

Initial Report: SealLine Storm Sack

22 July 2006


About Wayne, the tester:

Age: 33
Gender: Male
Height: 1.8 m (5' 10")
Weight: 90 kg (200 lb)
Email address: wayne underscore merry at yahoo dot com dot au
City, State, Country: Melbourne, Victoria, Australia

Backpacking Background: I started backpacking about five years ago, although I did day walks in childhood. I hike in various terrains from moderate/hard track walks to some off track (including river walks). I generally like the temperature to stay above freezing, and have not camped above the snow line during winter. I enjoy going on multi day walks up to about a week as well as day walks. I carry a moderate weight pack to enjoy a few creature comforts at camp. I would normally do at least 2 overnight or multi-day walks every three months, in addition to a number of 20 km (12 mile) or so day walks.
About the test environment:

I will be testing the Storm Sack in Victoria, Australia. Elevations will vary from 0 m to 1000 m (3300 feet) although I may climb higher up to 2000m (6600 feet). The test will be conducted in the winter and spring periods with temperatures varying from 0 C (32 F) to 20 C (68 F). Humidity varies from 30% to 90% + during this time of year. This time of year is typically the wettest time in Victoria, although long range forecasts are suggesting conditions could be drier than normal.

I will test the Storm Sack on my overnight or longer walks and depending on what I am carrying, on day walks as well. I will use it to carry my sleeping gear plus clothing, and possibly some food.
Product Details:Retail Packaging

  • Manufacturer: SealLine 
  • Web site: www.seallinegear.com
  • Year of manufacture: 2006
  • Place of manufacture: China
  • MSRP US$18.95
The SealLine Storm Sack is a dry bag with a roll-down closure. The seams are sewn and taped sealed. Both the body and the bottom use PVC-free 210D PU-coated nylon.

Specifications for product as tested:

  • Weight
    • Manufacturer: 108 g (3.8")
    • As tested: 116 g (4.1 oz)
  • Dimensions
    • Manufacturer: 22.9 cm (9 ") by 53.3 cm (21")
    • As tested: 23 cm (9") diameter. The Sack measured 62 cm (24.4") long and 35 cm (13.8") wide when flat.
Item Receipt & First Impressions:Flat Storm Sack

I received the SealLine Storm Sack in its retail packaging as shown above. From the web site, I had the impression that the Storm Sack was a roll down enclosed sack with a grab handle and that is exactly what it is.

My first impressions of the Storm Sack were positive. The clip mechanism works easily and appears to securely hold the sack closed. The Storm Sack appeared to be airtight when closed and my hand remained dry when I used it to force the storm sack down in a bucket of water for over 1 minute.

I found the bag easy to seal and fairly easy to remove unwanted air from within the bag.Inflated Storm Sack with grab handle The nylon has a good tactile feel and is easy to handle. The grab handle (see below right) is useful to help remove contents from the bag, but I do not feel it will be an option to carry the bag for long periods. At this stage I don't believe that the manufacturer's suggestion that the bag could be used on its own in place of a pack "when you need to watch every ounce" is practical. That said, the construction of the bag looks very good for the main purpose of the bag - keeping the contents dry in all situations except for sustained total immersion.

The clip mechanism is provided with a "D" ring (see below), which can be used to attach the bag to the exterior of a pack. Given the harsh conditions that I can experience in off track walking, I will be placing the sack inside a pack, and cannot immediately think of an alternative use of the D ring.

D ring & clip
Test Plan:

When using the Storm Sack, I will be testing the following:
  • Does the water tightness keep out dampness? How does it perform if damp for a prolonged period if that were to arise?
  • Is the bag easy to seal?
  • Is it easy to get the air out of the sack while sealing?
  • Do sealing characteristics vary throughout the 4 months of the test?
  • How durable is the material in a pack that will contain stoves, tents and other items that rumble and tumble around?
  • If (and I say only if!) I fall into the river on a river walk, can the bag keep the contents dry given a short period of total or partial immersion?



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Reviews > Stuff Sacks > Dry Bags > SealLine Storm Sack > Wayne Merry > Initial Report



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